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    CARA 1:

    ITEM DESCRIPTIONS (Q1) S (Q2) S (Q3)

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 250$ 150$ 308$

    NT Black Toboggan Hat 200$ 150$ 158$

    NT Moon Buggy T-shirt SS White 150$ 100$ 75$

    NT Farm Wheel Ringer T-shirt SS White 50$ - 150$

    NT Farm Wheel Rolls CD 50$ 200$ 200$

    NT Old School Logo T-shirt SS Granite 100$ 300$ 308$

    TOTAL 800$ 900$ 1,200$

    Note:

    Asumsi bahwa Shiping Cost (S) per order per item= $100 per order/ banyaknya jenis item dalam s

    ex. Pada Q1 terdapat 3 kali order untuk CD:

    5 Jan --> CD = $100

    26 Jan --> CD dan T-shirt SS =$100/2 item

    30 Mar --> CD =$100Total Shipping Q1 (CD) $250

    Lead Time untuk CD : 10 hari

    Lead Time untuk merchandise lainnya : 28 hari

    Cost per order per item (S) = Total Shipping Cost/ Sum Order

    Holding cost (H) per unit per year = Sum order*cost per order*0.15/receipts

    Optimal order quantity = SQRT(2*Demand*Shipping cost/Holding cost)

    Reorder point = Demand per day*Lead Time

    Annual purchase cost = Demand*Cost per unit

    Annual ordering cost = Demand*Shipping cost/Opt. order Quantity

    Annual holding cost = Opt. order quantity*Holding cost per unit per ye

    Total Demand , Receipts, Ending Inventory Tahun 2003

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    NT Yankee Hotel Foxtrot CD 44,843 48,000 2,662

    NT Black Toboggan Hat 6,139 6,500 489

    NT Moon Buggy T-shirt SS White 12,936 13,000 353

    NT Farm Wheel Ringer T-shirt SS White 6,018 4,500 (1,920)

    NT Farm Wheel Rolls CD 24,434 24,000 (886)

    NT Old School Logo T-shirt SS Granite 11,401 12,000 811TOTAL 105,771 108,000 1,509

    CARA 2:

    Cara 2 ini dipakai Shipping cost per order tetap =$100 per order

    Shipping cost (S)= $100 per order

    Holding Cost (H) = 15% * Shipping cost (S) = 0.15 * 100 = $ 15 per order

    Dalam 1 Tahun di tahun 2003, ada 42 kali pengiriman

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    Holding Cost (H) = 42 kali *15% * Shipping cost (S) = 42*0.15 * 100 = $ 630 per order

    Asumsi safety stock 25% dari Demand per tahun

    Shipping Cost (S) per orderHolding Cost

    (H) per order

    Holding Cost (H)

    per order in a

    year

    Total

    Receipts

    Order All

    items

    (1) (2)=(1)*0.15 (3)=42*(2) (4)

    100$ 15$ 630$ 108,000

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 44843 48000 2662

    NT Black Toboggan Hat 6139 6500 489

    NT Moon Buggy T-shirt SS White 12936 13000 353

    NT Farm Wheel Ringer T-shirt SS White 6018 4500 -1920

    NT Farm Wheel Rolls CD 24434 24000 -886NT Old School Logo T-shirt SS Granite 11401 12000 811

    TOTAL 105771 108000 1509

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    S (Q4)

    TOTAL SHIPPING

    COST

    SUM

    ORDER(O)

    SHIPPING COST

    PER ORDER (S)RECIEPTS

    (4) (5) (6) (7)=(5)/(6) (8)

    300$ 1,008$ 18 56.02$ 48,000

    200$ 708$ 12 59.03$ 6,500

    75$ 400$ 7 57.14$ 13,000

    258$ 458$ 10 45.83$ 4,500

    158$ 608$ 14 43.45$ 24,000

    308$ 1,017$ 19 53.51$ 12,000

    1,300$ 4,200$ 80 314.97$ 108,000

    kali order

    r/2

    RETAIL PRICE COSTCASE

    QUANTITY

    $ 14.95 9.18$ 100

    29.95$ 12.23$ 25

    24.95$ 8.75$ 50

    24.95$ 8.75$ 50

    14.95$ 9.18$ 100

    24.95$ 8.75$ 50134.70$ 56.84$ 375

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    Holding cost (H) per order per

    unit

    (5)=(3)/(4)

    0.006$

    OPTIMAL ORDER QUANTITY

    (Q) per year

    DEMAND PER DAY

    (d)

    LEAD TIME

    (L)

    REORDER POINT

    (R)COST (C)

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/365 (6) (7)=(5)*(6) (8)

    38,662$ 123 10 1229 9.18$

    14,305$ 17 28 471 12.23$

    20,765$ 35 28 992 8.75$

    14,163$ 16 28 462 8.75$

    28,539$ 67 10 669 9.18$19,494$ 31 28 875 8.75$

    135,929$ 290 132 4698 56.84$

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    HOLDING COST (H)DEMAND (D)

    OPTIMAL ORDER QUANTITY

    (Q) per year DEMAND PER DAY (d)

    (9)=(6)*(7)*0.15/(8) (10) (11)=SQRT(2*(10)(7)/(9) (12)=(10)/365

    0.0032$ 44,843 39,930 123

    0.0163$ 6,139 6,659 17

    0.0046$ 12,936 17,897 35

    0.0153$ 6,018 6,009 16

    0.0038$ 24,434 23,632 67

    0.0127$ 11,401 9,798 31

    0.0559$ 105,771 103,926 290

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    ANNUAL PURCHASE

    COST

    ANNUAL

    ORDERING COSTANNUAL HOLDING COST TOTAL COST (TC)

    (9)=(1)*(8) (10)=(1)*100/(4) (11)=(4)*0.006/2 (12)=(9)+(10)+(11)

    411,658.74$ 115.99$ 115.99$ 411,890.71$

    75,079.97$ 42.92$ 42.92$ 75,165.80$

    113,190.00$ 62.30$ 62.30$ 113,314.59$

    52,657.50$ 42.49$ 42.49$ 52,742.48$

    224,304.12$ 85.62$ 85.62$ 224,475.35$99,758.75$ 58.48$ 58.48$ 99,875.72$

    976,649.08$ 407.79$ 407.79$ 977,464.66$

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    LEAD TIME (L) REORDER POINT (R)COST (C)

    ANNUAL

    PURCHASE COST

    ANNUAL ORDERING

    COST

    (13) (14)=(12)*(13) (15) (16)=(10)*(15) (17)=(10)*(7)/(11)

    10 1,229 9.18$ 411,658.74$ 62.91$

    28 471 12.23$ 75,079.97$ 54.42$

    28 992 8.75$ 113,190.00$ 41.30$

    28 462 8.75$ 52,657.50$ 45.90$

    10 669 9.18$ 224,304.12$ 44.92$

    28 875 8.75$ 99,758.75$ 62.26$

    132 4,698 56.84$ 976,649.08$ 311.71$

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    RETAIL PRICE TOTAL SALES MARGIN

    (13) (14)=(13)*(1) (15)=(14)-(12)

    $ 14.95 670,402.85$ 258,512.14$

    29.95$ 183,863.05$ 108,697.25$

    24.95$ 322,753.20$ 209,438.61$

    24.95$ 150,149.10$ 97,406.62$

    14.95$ 365,288.30$ 140,812.95$24.95$ 284,454.95$ 184,579.23$

    134.70$ 1,976,911.45$ 999,446.79$

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    ANNUAL HOLDING

    COST TOTAL COST (TC)RETAIL PRICE TOTAL SALES MARGIN

    (18)=(11)*(9)/2 (19)=(16)+(17)+(18) (20) (21)=(20)*(10) (22)=(21)-(19)

    62.91$ 411,784.56$ $ 14.95 670,402.85$ 258,618.29$

    54.42$ 75,188.81$ 29.95$ 183,863.05$ 108,674.24$

    41.30$ 113,272.60$ 24.95$ 322,753.20$ 209,480.60$

    45.90$ 52,749.30$ 24.95$ 150,149.10$ 97,399.80$

    44.92$ 224,393.97$ 14.95$ 365,288.30$ 140,894.33$

    62.26$ 99,883.26$ 24.95$ 284,454.95$ 184,571.69$

    311.71$ 977,272.50$ 134.70$ 1,976,911.45$ 999,638.95$

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    Demand for NightTrain products in Q1 2003

    Week Ending Data

    ITEM DESCRIPTION 5-Jan 12-Jan 19-JanNT Yankee Hotel Foxtrot CD 577 644 514

    NT Black Toboggan Hat 56 37 46

    NT Moon Buggy T-shirt SS White 184 130 180

    NT Farm Wheel Ringer T-shirt SS White 37 78 79

    NT Farm Wheel Rolls CD 360 351 289

    NT Old School Logo T-shirt SS Granite 138 93 151

    TOTAL 1352 1333 1259

    Demand for NightTrain products in Q2 2003Week Ending Data

    ITEM DESCRIPTION 6-Apr 13-Apr 20-Apr

    NT Yankee Hotel Foxtrot CD 234 377 423

    NT Black Toboggan Hat 38 49 93

    NT Moon Buggy T-shirt SS White 82 139 105

    NT Farm Wheel Ringer T-shirt SS White 74 51 88

    NT Farm Wheel Rolls CD 333 144 330

    NT Old School Logo T-shirt SS Granite 72 102 115

    TOTAL 833 862 1154

    DEMAND Q3

    ITEM NUMBER 6-Jul 13-Jul 20-Jul

    NTCD06 1,159 1,165 1,562

    NTCH01TBBK 220 172 214

    NTCT08SXWH 328 404 327

    NTCT10SXWH 163 190 176

    NTCD12 662 725 729

    NTCT26SXGT 389 330 393

    Demand for NightTrain products in Q4 2003

    Week Ending Data

    ITEM DESCRIPTION 5-Oct 12-Oct 19-Oct

    NT Yankee Hotel Foxtrot CD 535 407 429

    NT Black Toboggan Hat 64 45 44

    NT Moon Buggy T-shirt SS White 195 139 168

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    NT Farm Wheel Ringer T-shirt SS White 74 46 31

    NT Farm Wheel Rolls CD 193 155 168

    NT Old School Logo T-shirt SS Granite 113 114 137

    TOTAL 1174 906 977

    ITEM DESCRIPTION DEMAND RECIEPTS END INVENTORY

    NT Yankee Hotel Foxtrot CD 44,843 48,000 2,662

    NT Black Toboggan Hat 6,139 6,500 489

    NT Moon Buggy T-shirt SS White 12,936 13,000 353

    NT Farm Wheel Ringer T-shirt SS White 6,018 4,500 (1,920)

    NT Farm Wheel Rolls CD 24,434 24,000 (886)

    NT Old School Logo T-shirt SS Granite 11,401 12,000 811

    TOTAL 105,771 108,000 1,509

    Receipts of NightTrain products in Q1 2003

    Week Ending Data

    ITEM DESCRIPTION 5-Jan 12-Jan 19-Jan

    NT Yankee Hotel Foxtrot CD 1000

    NT Black Toboggan Hat 500

    NT Moon Buggy T-shirt SS White

    NT Farm Wheel Ringer T-shirt SS White

    NT Farm Wheel Rolls CD

    NT Old School Logo T-shirt SS Granite

    TOTAL 1000 500 0

    Receipts of NightTrain products in Q2 2003

    Week Ending Data

    ITEM DESCRIPTION 6-Apr 13-Apr 20-Apr

    NT Yankee Hotel Foxtrot CD

    NT Black Toboggan Hat

    NT Moon Buggy T-shirt SS White

    NT Farm Wheel Ringer T-shirt SS White

    NT Farm Wheel Rolls CD 1000

    NT Old School Logo T-shirt SS Granite

    TOTAL 0 0 1000

    RECEIPTS OF NIGHTTRAIN

    ITEM NUMBER 6-Jul 13-Jul 20-Jul

    NTCD06 2,000 2,000 3,000

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    NTCH01TBBK - - -

    NTCT08SXWH - - 2,000

    NTCT10SXWH 250 - -

    NTCD12 2,000 - 1,000

    NTCT26SXGT 500 500 500

    Receipts of NightTrain products in Q4 2003

    Week Ending Data

    ITEM DESCRIPTION 5-Oct 12-Oct 19-Oct

    NT Yankee Hotel Foxtrot CD 5000

    NT Black Toboggan Hat 250

    NT Moon Buggy T-shirt SS White

    NT Farm Wheel Ringer T-shirt SS White 500

    NT Farm Wheel Rolls CD

    NT Old School Logo T-shirt SS Granite 500

    TOTAL 750 5000 500

    COST PER ORDER 50 100 100

    Week Ending Inventory of NightTrain products in Q1 2003

    Week Ending Data

    ITEM DESCRIPTION 5-Jan 12-Jan 19-Jan

    NT Yankee Hotel Foxtrot CD 988 344 -170

    NT Black Toboggan Hat 297 760 714NT Moon Buggy T-shirt SS White 360 230 50

    NT Farm Wheel Ringer T-shirt SS White 2451 2373 2294

    NT Farm Wheel Rolls CD 4309 3958 3669

    NT Old School Logo T-shirt SS Granite 1584 1491 1340

    TOTAL 9989 9156 7897

    Week Ending Inventory of NightTrain products in Q2 2003

    Week Ending Data

    ITEM DESCRIPTION 6-Apr 13-Apr 20-Apr

    NT Yankee Hotel Foxtrot CD 2192 1815 1392

    NT Black Toboggan Hat 251 202 109

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    NT Moon Buggy T-shirt SS White 1303 1164 1059

    NT Farm Wheel Ringer T-shirt SS White 2114 2063 1975

    NT Farm Wheel Rolls CD 2155 2011 2681

    NT Old School Logo T-shirt SS Granite 757 655 540

    TOTAL 8772 7910 7756

    WEEK ENDING INVENTORY

    ITEM NUMBER 6-Jul 13-Jul 20-Jul

    NTCD06 744 1,579 3,017

    NTCH01TBBK 242 70 (144)

    NTCT08SXWH 326 (78) 1,595

    NTCT10SXWH 890 700 524

    NTCD12 1,301 576 847

    NTCT26SXGT 532 702 809

    Week Ending Inventory of NightTrain products in Q4 2003

    Week Ending Data

    ITEM DESCRIPTION 5-Oct 12-Oct 19-Oct

    NT Yankee Hotel Foxtrot CD 2036 6629 6200

    NT Black Toboggan Hat 791 746 702

    NT Moon Buggy T-shirt SS White 617 478 310NT Farm Wheel Ringer T-shirt SS White 697 651 620

    NT Farm Wheel Rolls CD 2520 2365 2197

    NT Old School Logo T-shirt SS Granite 240 126 489

    TOTAL 6901 10995 10518

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    26-Jan 2-Feb 9-Feb 16-Feb 23-Feb 2-Mar 9-Mar 16-Mar 23-Mar480 351 534 508 380 666 230 260 608

    94 71 57 69 62 74 43 65 57

    102 119 188 74 98 89 163 84 147

    53 44 69 43 66 76 35 87 55

    236 184 137 199 187 255 305 187 329

    103 115 93 122 125 68 58 109 72

    1068 884 1078 1015 918 1228 834 792 1268

    27-Apr 4-May 11-May 18-May 25-May 1-Jun 8-Jun 15-Jun 22-Jun

    245 543 457 436 329 942 1410 1278 1568

    80 38 81 36 49 155 173 168 171

    128 76 107 149 138 198 350 450 393

    48 68 43 88 66 127 168 178 190

    327 332 204 358 237 371 734 721 707

    74 144 73 87 104 271 291 385 390

    902 1201 965 1154 923 2064 3126 3180 3419

    27-Jul 3-Aug 10-Aug 17-Aug 24-Aug 31-Aug 7-Sep 14-Sep 21-Sep

    1,327 1,532 1,434 1,408 1,265 819 288 394 552

    215 184 216 214 162 105 42 36 37

    448 387 355 403 338 288 130 111 132

    160 203 191 169 174 95 56 83 47

    852 777 613 661 710 453 265 347 159

    380 346 360 339 296 255 114 107 118

    26-Oct 2-Nov 9-Nov 16-Nov 23-Nov 30-Nov 7-Dec 14-Dec 21-Dec

    481 559 343 1066 1413 1699 2131 2713 2125

    51 88 80 123 175 233 337 348 314

    160 80 184 224 442 580 647 723 618

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    82 36 60 116 202 218 283 372 294

    142 286 215 542 662 1090 1330 1539 1255

    142 110 158 256 324 424 521 713 604

    1058 1159 1040 2327 3218 4244 5249 6408 5210

    26-Jan 2-Feb 9-Feb 16-Feb 23-Feb 2-Mar 9-Mar 16-Mar 23-Mar

    5000

    250

    500 2000

    500

    1000

    500

    5500 0 1500 500 0 2000 250 0 0

    27-Apr 4-May 11-May 18-May 25-May 1-Jun 8-Jun 15-Jun 22-Jun

    5000

    1000 500

    500 2000

    1000 1000

    500 500 500

    1000 0 500 500 5000 2000 1500 500 1500

    27-Jul 3-Aug 10-Aug 17-Aug 24-Aug 31-Aug 7-Sep 14-Sep 21-Sep

    3,000 1,000 1,000 1,000 - 3,000 - - -

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    1,000 - - 500 - - 500 - -

    - - - - 2,000 - - - -

    - - - 500 - - - 500 -

    1,000 1,000 - 5,000 - - - -

    500 500 500

    26-Oct 2-Nov 9-Nov 16-Nov 23-Nov 30-Nov 7-Dec 14-Dec 21-Dec

    3000 3000 3000 3000

    500 500 500

    2000 2000

    500 250 500 500

    1000 1000 2000 2000

    500 500 500 1000 2000

    500 3500 5000 3500 3500 1500 3750 3500 5000

    100 50 50 50 50 50 25 33.33333 25

    26-Jan 2-Feb 9-Feb 16-Feb 23-Feb 2-Mar 9-Mar 16-Mar 23-Mar

    4350 3999 3465 2957 2577 1911 1681 1421 813

    620 549 492 423 361 287 494 429 372-52 -171 141 67 -31 1880 1717 1633 1486

    2741 2697 2628 2585 2519 2443 2408 2321 2266

    3433 3249 4112 3913 3726 3471 3166 2979 2650

    1237 1122 1029 1407 1282 1214 1156 1047 975

    12329 11445 11867 11352 10434 11206 10622 9830 8562

    27-Apr 4-May 11-May 18-May 25-May 1-Jun 8-Jun 15-Jun 22-Jun

    1147 604 147 -289 4382 3440 2030 752 -816

    29 991 910 874 825 670 997 829 658

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    931 855 748 599 461 2283 1913 1463 1070

    1927 1859 1816 1728 1662 1535 1367 1189 999

    2354 2022 1818 1460 1223 852 1118 397 690

    466 322 249 662 558 287 -4 111 221

    6854 6653 5688 5034 9111 9067 7421 4741 2822

    27-Jul 3-Aug 10-Aug 17-Aug 24-Aug 31-Aug 7-Sep 14-Sep 21-Sep

    4,690 4,158 3,724 3,316 2,051 4,232 3,944 3,550 2,998

    641 457 241 527 365 260 718 682 645

    1,147 760 405 2 1,664 1,376 1,246 1,135 1,003

    364 161 (30) 301 127 32 (24) 393 346

    (5) 218 605 (56) 4,234 3,781 3,516 3,169 3,010

    929 583 223 384 88 333 219 112 (6)

    26-Oct 2-Nov 9-Nov 16-Nov 23-Nov 30-Nov 7-Dec 14-Dec 21-Dec

    5719 8160 10817 12751 14338 12639 10508 7795 5670

    651 1063 983 860 685 952 615 267 453

    150 70 1886 1662 1220 640 1993 1270 6521038 1002 942 826 624 406 373 501 707

    2055 1769 1554 1012 350 260 -70 391 1136

    347 237 79 323 499 75 54 341 1737

    9960 12301 16261 17434 17716 14972 13473 10565 10355

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    30-Mar Sales387 6139

    83 814

    101 1659

    78 800

    162 3181

    146 1393

    0

    957 13986

    29-Jun Sales

    1281 9523

    196 1327

    416 2731

    196 1385

    727 5525

    300 2408

    0

    3116 22899

    28-Sep SALES

    427 13,332

    40 1,857

    191 3,842

    75 1,782

    297 7,250

    141 3,568

    28-Dec Sales

    1948 15849

    239 2141

    544 4704

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    237 2051

    901 8478

    416 4032

    0

    4285 37255

    30-Mar Receipts

    2000 8000

    750

    2500

    500

    1000

    500

    02000 13250

    29-Jun Receipts

    2000 7000

    1500

    2500

    0

    3000

    500 2000

    2500 16000

    28-Sep RECEIPTS

    - 16,000

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    - 2,000

    - 4,000

    - 1,250

    - 10,000

    500 3,500

    28-Dec Receipts

    17000

    500 2250

    4000

    500 2750

    4000 10000

    1000 6000

    0

    6000 42000

    25 708.3333

    30-Mar Change

    2426 1438

    289 -81385 1025

    2188 -263

    2488 -1821

    829 -755

    9605 -384

    29-Jun Change

    -97 -2289

    462 211

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    654 -649

    803 -1311

    -37 -2192

    421 -336

    2206 -6566

    28-Sep change

    2,571 1,827

    605 363

    812 486

    271 (619)

    2,713 1,412

    353 (179)

    28-Dec Change

    3722 1686

    714 -77

    108 -509970 273

    4235 1715

    2321 2081

    12070 5169

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    Demand for NightTrain products in Q1 2003

    Week Ending Data

    ITEM DES 5-Jan 12-Jan 19-Jan 26-Jan Total Jan 2-Feb 9-Feb 16-Feb

    NT Yankee 577 644 514 480 2215 351 534 508

    NT Black T 56 37 46 94 233 71 57 69

    NT Moon B 184 130 180 102 596 119 188 74

    NT Farm W 37 78 79 53 247 44 69 43NT Farm W 360 351 289 236 1236 184 137 199

    NT Old Sch 138 93 151 103 485 115 93 122

    TOTAL 1352 1333 1259 1068 5012 884 1078 1015

    Demand for NightTrain products in Q2 2003

    Week Ending Data

    ITEM DES 6-Apr 13-Apr 20-Apr 27-Apr 4-May 11-May 18-May

    NT Yankee 234 377 423 245 1279 543 457 436

    NT Black T 38 49 93 80 260 38 81 36

    NT Moon B 82 139 105 128 454 76 107 149

    NT Farm W 74 51 88 48 261 68 43 88

    NT Farm W 333 144 330 327 1134 332 204 358

    NT Old Sch 72 102 115 74 363 144 73 87

    TOTAL 833 862 1154 902 3751 1201 965 1154

    DEMAND Q3

    ITEM NUM 6-Jul 13-Jul 20-Jul 27-Jul 3-Aug 10-Aug 17-Aug

    NTCD06 1,159 1,165 1,562 1,327 5,213 1,532 1,434 1,408

    NTCH01TB 220 172 214 215 821 184 216 214NTCT08SX 328 404 327 448 1,507 387 355 403

    NTCT10SX 163 190 176 160 689 203 191 169

    NTCD12 662 725 729 852 2,968 777 613 661

    NTCT26SX 389 330 393 380 1,492 346 360 339

    Demand for NightTrain products in Q4 2003

    Week Ending Data

    ITEM DES 5-Oct 12-Oct 19-Oct 26-Oct 2-Nov 9-Nov 16-Nov

    NT Yankee 535 407 429 481 1852 559 343 1066

    NT Black T 64 45 44 51 204 88 80 123

    NT Moon B 195 139 168 160 662 80 184 224

    NT Farm W 74 46 31 82 233 36 60 116

    NT Farm W 193 155 168 142 658 286 215 542

    NT Old Sch 113 114 137 142 506 110 158 256

    TOTAL 1174 906 977 1058 1159 1040 2327

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    Receipts of NightTrain products in Q1 2003

    Week Ending Data

    ITEM DES 5-Jan 12-Jan 19-Jan 26-Jan 2-Feb 9-Feb 16-Feb

    NT Yankee 1000 5000 6000

    NT Black Toboggan Ha 500 500NT Moon Buggy T-shirt SS White 0 500

    NT Farm Wheel Ringer T-shirt SS White 500 500

    NT Farm Wheel Rolls CD 0 1000

    NT Old School Logo T-shirt SS Granite 0 500

    TOTAL 1000 500 0 5500 0 1500 500

    Receipts of NightTrain products in Q2 2003

    Week Ending Data

    ITEM DES 6-Apr 13-Apr 20-Apr 27-Apr 4-May 11-May 18-May

    NT Yankee Hotel Foxtrot CD 0

    NT Black Toboggan Hat 1000 1000

    NT Moon Buggy T-shirt SS White 0 500

    NT Farm Wheel Ringer T-shirt SS White 0

    NT Farm Wheel Rolls CD 1000 1000

    NT Old School Logo T-shirt SS Granite 0 500

    TOTAL 0 0 1000 1000 0 500 500

    RECEIPTS OF NIGHTTRAINITEM NUM 6-Jul 13-Jul 20-Jul 27-Jul 3-Aug 10-Aug 17-Aug

    NTCD06 2,000 2,000 3,000 3,000 10,000 1,000 1,000 1,000

    NTCH01TB - - - 1,000 1,000 - - 500

    NTCT08SX - - 2,000 - 2,000 - - -

    NTCT10SX 250 - - - 250 - - 500

    NTCD12 2,000 - 1,000 3,000 1,000 1,000 -

    NTCT26SX 500 500 500 500 2,000 500

    Receipts of NightTrain products in Q4 2003

    Week Ending Data

    ITEM DES 5-Oct 12-Oct 19-Oct 26-Oct 2-Nov 9-Nov 16-Nov

    NT Yankee Hotel Foxtr 5000 5000 3000 3000 3000

    NT Black T 250 250 500

    NT Moon Buggy T-shirt SS White 0 2000

    NT Farm W 500 500 1000

    NT Farm Wheel Rolls CD 0

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    NT Old School Logo T-shirt SS Gra 500 500 500

    TOTAL 750 5000 500 500 3500 5000 3500

    COST PE 50 100 100 100 50 50 50

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    23-Feb Total Feb 2-Mar 9-Mar 16-Mar 23-Mar 30-Mar Total Mar

    380 1773 666 230 260 608 387 2151

    62 259 74 43 65 57 83 322

    98 479 89 163 84 147 101 584

    66 222 76 35 87 55 78 331187 707 255 305 187 329 162 1238

    125 455 68 58 109 72 146 453

    918 3895 1228 834 792 1268 957 5079

    25-May 1-Jun 8-Jun 15-Jun 22-Jun 29-Jun

    329 1765 942 1410 1278 1568 1281 6479

    49 204 155 173 168 171 196 863

    138 470 198 350 450 393 416 1807

    66 265 127 168 178 190 196 859

    237 1131 371 734 721 707 727 3260

    104 408 271 291 385 390 300 1637

    923 4243 2064 3126 3180 3419 3116 14905

    24-Aug 31-Aug 7-Sep 14-Sep 21-Sep 28-Sep

    1,265 819 6,458 288 394 552 427 1,661

    162 105 881 42 36 37 40 155338 288 1,771 130 111 132 191 564

    174 95 832 56 83 47 75 261

    710 453 3,214 265 347 159 297 1,068

    296 255 1,596 114 107 118 141 480

    23-Nov 30-Nov 7-Dec 14-Dec 21-Dec 28-Dec

    1413 1699 5080 2131 2713 2125 1948 8917

    175 233 699 337 348 314 239 1238

    442 580 1510 647 723 618 544 2532

    202 218 632 283 372 294 237 1186

    662 1090 2795 1330 1539 1255 901 5025

    324 424 1272 521 713 604 416 2254

    3218 4244 5249 6408 5210 4285

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    23-Feb 2-Mar 9-Mar 16-Mar 23-Mar 30-Mar

    0 2000 2000

    0 250 250500 2000 2000

    0 0

    1000 0

    500 0

    0 2000 250 0 0 2000

    25-May 1-Jun 8-Jun 15-Jun 22-Jun 29-Jun

    5000 5000 2000 2000

    0 500 500

    500 2000 2000

    0 0

    0 1000 1000 2000

    500 500 500 500 1500

    5000 2000 1500 500 1500 2500

    24-Aug 31-Aug 7-Sep 14-Sep 21-Sep 28-Sep

    - 3,000 6,000 - - - - -

    - - 500 500 - - - 500

    2,000 - 2,000 - - - - -

    - - 500 - 500 - - 500

    5,000 - 7,000 - - - - -

    500 1,000 500 500

    23-Nov 30-Nov 7-Dec 14-Dec 21-Dec 28-Dec

    3000 12000 0

    500 1000 500 500 1000

    2000 2000 2000

    0 250 500 500 500 1750

    1000 1000 1000 2000 2000 4000 9000

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    500 1000 500 1000 2000 1000 4500

    3500 1500 3750 3500 5000 6000

    50 50 25 33.33333 25 25

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    Total Demand Tahun 2003

    ITEM DESCRIPTION

    Jan Feb Mar

    NT Yankee Hotel Foxtrot CD 2,215 1,773 2,151

    NT Black Toboggan Hat 233 259 322

    NT Moon Buggy T-shirt SS White 596 479 584

    NT Farm Wheel Ringer T-shirt SS White 247 222 331NT Farm Wheel Rolls CD 1,236 707 1,238

    NT Old School Logo T-shirt SS Granite 485 455 453

    TOTAL 5,012 3,895 5,079

    Total ReceiptsTahun 2003

    ITEM DESCRIPTION

    Jan Feb Mar

    NT Yankee Hotel Foxtrot CD 6,000 - 2,000

    NT Black Toboggan Hat 500 - 250

    NT Moon Buggy T-shirt SS White - 500 2,000

    NT Farm Wheel Ringer T-shirt SS White 500 - -

    NT Farm Wheel Rolls CD - 1,000 -

    NT Old School Logo T-shirt SS Granite - 500 -

    TOTAL 7,000 2,000 4,250

    CARA 2:

    Cara 2 ini dipakai Shipping cost per order tetap =$100 per order

    Shipping cost (S)= $100 per order

    Holding Cost (H) = 15% * Shipping cost (S) = 0.15 * 100 = $ 15 per orderDalam 1 Tahun di tahun 2003, ada 42 kali pengiriman

    Holding Cost (H) = 42 kali *15% * Shipping cost (S) = 42*0.15 * 100 = $ 630 per order

    Asumsi bahwa Holding Cost (H) per order per unit tetap atau dari rata-rata per unit dala

    apa holding cost nya diitung rata per bulan juga ya? Berarti nanti beda2 tiap bulan bgm?

    ga ada safety stock krn klo ada berarti model yg lain ga ada safety stock diasumsikan b

    yang bingung, knp annual holding cost n annual ordering cost jadi sama ya? Tapi udah se

    Lead Time untuk CD : 10 hari

    Lead Time untuk merchandise lainnya : 28 hari

    Holding cost (H) per unit per year = Sum order*cost per order*0.15/receipts

    Optimal order quantity (Q) = SQRT(2*Demand*Shipping cost/Holding c

    Reorder point (R) = Demand per day*Lead TimeAnnual purchase cost = Demand*Cost per unit

    Annual ordering cost = Demand*Shipping cost/Opt. order Quanti

    Annual holding cost = Opt. order quantity*Holding cost per unit

    Total cost (TC) = Annual purchase cost + annual ordering c

    annual ? Artinya pertahun or maksudnya rutin per periode, periodenya bisa bulan , tahu

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    Shipping Cost (S) per orderHolding Cost

    (H) per order

    Holding Cost

    (H) per order

    in a year

    Total

    Receipts

    Order All

    items

    (1) (2)=(1)*0.15 (3)=42*(2) (4)

    100$ 15$ 630$ 108,000

    JANUARI

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 2,215 6,000

    NT Black Toboggan Hat 233 500

    NT Moon Buggy T-shirt SS White 596 -

    NT Farm Wheel Ringer T-shirt SS White 247 500

    NT Farm Wheel Rolls CD 1,236 -

    NT Old School Logo T-shirt SS Granite 485 -

    TOTAL 5,012 7000

    FEBRUARI

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 1,773 -

    NT Black Toboggan Hat 259 -

    NT Moon Buggy T-shirt SS White 479 500NT Farm Wheel Ringer T-shirt SS White 222 -

    NT Farm Wheel Rolls CD 707 1,000

    NT Old School Logo T-shirt SS Granite 455 500

    TOTAL 3,895 2000

    MARET

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 2,151 2,000

    NT Black Toboggan Hat 322 250

    NT Moon Buggy T-shirt SS White 584 2,000

    NT Farm Wheel Ringer T-shirt SS White 331 -

    NT Farm Wheel Rolls CD 1,238 -

    NT Old School Logo T-shirt SS Granite 453 -

    TOTAL 5,079 4250

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    APRIL

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)NT Yankee Hotel Foxtrot CD 1,279 -

    NT Black Toboggan Hat 260 1,000

    NT Moon Buggy T-shirt SS White 454 -

    NT Farm Wheel Ringer T-shirt SS White 261 -

    NT Farm Wheel Rolls CD 1,134 1,000

    NT Old School Logo T-shirt SS Granite 363 -

    TOTAL 3,751 2000

    MAY

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 1,765 5,000

    NT Black Toboggan Hat 204 -

    NT Moon Buggy T-shirt SS White 470 500

    NT Farm Wheel Ringer T-shirt SS White 265 -

    NT Farm Wheel Rolls CD 1,131 -

    NT Old School Logo T-shirt SS Granite 408 500

    TOTAL 4,243 6000

    JUN

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 6479 2000

    NT Black Toboggan Hat 863 500

    NT Moon Buggy T-shirt SS White 1807 2000

    NT Farm Wheel Ringer T-shirt SS White 859 0NT Farm Wheel Rolls CD 3260 2000

    NT Old School Logo T-shirt SS Granite 1637 1500

    TOTAL 14,905 8000

    JUL

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    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 5,213 10,000

    NT Black Toboggan Hat 821 1,000

    NT Moon Buggy T-shirt SS White 1,507 2,000NT Farm Wheel Ringer T-shirt SS White 689 250

    NT Farm Wheel Rolls CD 2,968 3,000

    NT Old School Logo T-shirt SS Granite 1,492 2,000

    TOTAL 12,690 18250

    AUG

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 6458 6000

    NT Black Toboggan Hat 881 500

    NT Moon Buggy T-shirt SS White 1771 2000

    NT Farm Wheel Ringer T-shirt SS White 832 500

    NT Farm Wheel Rolls CD 3214 7000

    NT Old School Logo T-shirt SS Granite 1596 1000

    TOTAL 14,752 17000

    SEP

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 1661 0

    NT Black Toboggan Hat 155 500

    NT Moon Buggy T-shirt SS White 564 0

    NT Farm Wheel Ringer T-shirt SS White 261 500

    NT Farm Wheel Rolls CD 1068 0

    NT Old School Logo T-shirt SS Granite 480 500

    TOTAL 4,189 1500

    OCT

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 1852 5000

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    NT Black Toboggan Hat 204 250

    NT Moon Buggy T-shirt SS White 662 0

    NT Farm Wheel Ringer T-shirt SS White 233 1000

    NT Farm Wheel Rolls CD 658 0

    NT Old School Logo T-shirt SS Granite 506 500

    TOTAL 4,115 6750

    NOV

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 5080 12000

    NT Black Toboggan Hat 699 1000

    NT Moon Buggy T-shirt SS White 1510 2000

    NT Farm Wheel Ringer T-shirt SS White 632 0

    NT Farm Wheel Rolls CD 2795 1000

    NT Old School Logo T-shirt SS Granite 1272 1000

    TOTAL 11,988 17000

    DEC

    ITEM DESCRIPTION DEMAND RECIEPTSEND

    INVENTORY

    (1) (2) (3)

    NT Yankee Hotel Foxtrot CD 8917 0NT Black Toboggan Hat 1238 1000

    NT Moon Buggy T-shirt SS White 2532 2000

    NT Farm Wheel Ringer T-shirt SS White 1186 1750

    NT Farm Wheel Rolls CD 5025 9000

    NT Old School Logo T-shirt SS Granite 2254 4500

    TOTAL 21,152 18250

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    Q1 Apr May Jun Q2 Jul Aug

    6,139 1,279 1,765 6479 9,523 5,213 6458

    814 260 204 863 1,327 821 881

    1,659 454 470 1807 2,731 1,507 1771

    800 261 265 859 1,385 689 8323,181 1,134 1,131 3260 5,525 2,968 3214

    1,393 363 408 1637 2,408 1,492 1596

    13,986 3,751 4,243 14,905 22,899 12,690 14,752

    Q1 Apr May Jun Q2 Jul Aug

    8,000 - 5,000 2000 7,000 10,000 6000

    750 1,000 - 500 1,500 1,000 500

    2,500 - 500 2000 2,500 2,000 2000

    500 - - 0 - 250 500

    1,000 1,000 - 2000 3,000 3,000 7000

    500 - 500 1500 2,000 2,000 1000

    13,250 2,000 6,000 8,000 16,000 18,250 17,000

    1 tahun

    ?

    hwa batas reorder point mencukupi stock cadangan sampai pemesanan tiba

    suai rumus

    ost)

    ty

    per year/2

    st + annual holding cost

    or lain2

    DEMAND

    RECEIPTS

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    Holding cost (H) per order

    per unit

    (5)=(3)/(4)

    0.006$

    OPTIMAL ORDER

    QUANTITY (Q) per year

    DEMAND

    PER DAY (d)

    LEAD

    TIME (L)

    REORDER

    POINT (R)

    COST (C)

    ANNUAL

    PURCHASE

    COST

    ANNUAL

    ORDERING COST

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/31 (6) (7)=(5)*(6) (8) (9)=(1)*(8) (10)=(1)*100/(4)

    8,593$ 71 10 715 9.18$ 20,333.70$ 25.78$

    2,787$ 8 28 210 12.23$ 2,849.59$ 8.36$

    4,457$ 19 28 538 8.75$ 5,215.00$ 13.37$

    2,869$ 8 28 223 8.75$ 2,161.25$ 8.61$

    6,419$ 40 10 399 9.18$ 11,346.48$ 19.26$

    4,021$ 16 28 438 8.75$ 4,243.75$ 12.06$

    29,146$ 162 132 2523 56.84$ 46,149.77$ 87.44$

    OPTIMAL ORDER

    QUANTITY (Q) per year

    DEMAND

    PER DAY (d)

    LEAD

    TIME (L)

    REORDER

    POINT (R)

    COST (C)

    ANNUAL

    PURCHASE

    COST

    ANNUAL

    ORDERING COST

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/28 (6) (7)=(5)*(6) (8) (9)=(1)*(8) (10)=(1)*100/(4)

    7,688$ 63 10 633 9.18$ 16,276.14$ 23.06$

    2,938$ 9 28 259 12.23$ 3,167.57$ 8.81$

    3,996$ 17 28 479 8.75$ 4,191.25$ 11.99$2,720$ 8 28 222 8.75$ 1,942.50$ 8.16$

    4,855$ 25 10 253 9.18$ 6,490.26$ 14.56$

    3,894$ 16 28 455 8.75$ 3,981.25$ 11.68$

    26,091$ 139 132 2301 56.84$ 36,048.97$ 78.27$

    OPTIMAL ORDER

    QUANTITY (Q) per year

    DEMAND

    PER DAY (d)

    LEAD

    TIME (L)

    REORDER

    POINT (R)

    COST (C)

    ANNUAL

    PURCHASE

    COST

    ANNUAL

    ORDERING COST

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/31 (6) (7)=(5)*(6) (8) (9)=(1)*(8) (10)=(1)*100/(4)

    8,468$ 69 10 694 9.18$ 19,746.18$ 25.40$

    3,276$ 10 28 291 12.23$ 3,938.06$ 9.83$

    4,412$ 19 28 527 8.75$ 5,110.00$ 13.24$

    3,322$ 11 28 299 8.75$ 2,896.25$ 9.96$

    6,424$ 40 10 399 9.18$ 11,364.84$ 19.27$

    3,886$ 15 28 409 8.75$ 3,963.75$ 11.66$

    29,787$ 164 132 2620 56.84$ 47,019.08$ 89.36$

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    OPTIMAL ORDER

    QUANTITY (Q) per year

    DEMAND

    PER DAY (d)

    LEAD

    TIME (L)

    REORDER

    POINT (R)

    COST (C)

    ANNUAL

    PURCHASE

    COST

    ANNUAL

    ORDERING COST

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/30 (6) (7)=(5)*(6) (8) (9)=(1)*(8) (10)=(1)*100/(4)6,529$ 43 10 426 9.18$ 11,741.22$ 19.59$

    2,944$ 8 28 235 12.23$ 3,179.80$ 8.83$

    3,890$ 15 28 410 8.75$ 3,972.50$ 11.67$

    2,950$ 8 28 236 8.75$ 2,283.75$ 8.85$

    6,148$ 37 10 366 9.18$ 10,410.12$ 18.44$

    3,479$ 12 28 328 8.75$ 3,176.25$ 10.44$

    25,940$ 122 132 2001 56.84$ 34,763.64$ 77.82$

    OPTIMAL ORDER

    QUANTITY (Q) per year

    DEMAND

    PER DAY (d)

    LEAD

    TIME (L)

    REORDER

    POINT (R)

    COST (C)

    ANNUAL

    PURCHASE

    COST

    ANNUAL

    ORDERING COST

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/31 (6) (7)=(5)*(6) (8) (9)=(1)*(8) (10)=(1)*100/(4)

    7,670$ 57 10 569 9.18$ 16,202.70$ 23.01$

    2,608$ 7 28 184 12.23$ 2,494.92$ 7.82$

    3,958$ 15 28 425 8.75$ 4,112.50$ 11.87$

    2,972$ 9 28 239 8.75$ 2,318.75$ 8.92$

    6,140$ 36 10 365 9.18$ 10,382.58$ 18.42$

    3,688$ 13 28 369 8.75$ 3,570.00$ 11.06$

    27,036$ 137 132 2151 56.84$ 39,081.45$ 81.11$

    OPTIMAL ORDER

    QUANTITY (Q) per year

    DEMAND

    PER DAY (d)

    LEAD

    TIME (L)

    REORDER

    POINT (R)

    COST (C)

    ANNUAL

    PURCHASE

    COST

    ANNUAL

    ORDERING COST

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/30 (6) (7)=(5)*(6) (8) (9)=(1)*(8) (10)=(1)*100/(4)

    14,696$ 216 10 2160 9.18$ 59,477.22$ 44.09$

    5,363$ 29 28 805 12.23$ 10,554.49$ 16.09$

    7,761$ 60 28 1687 8.75$ 15,811.25$ 23.28$

    5,351$ 29 28 802 8.75$ 7,516.25$ 16.05$10,424$ 109 10 1087 9.18$ 29,926.80$ 31.27$

    7,387$ 55 28 1528 8.75$ 14,323.75$ 22.16$

    50,983$ 497 132 8068 56.84$ 137,609.76$ 152.95$

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    OPTIMAL ORDER

    QUANTITY (Q) per year

    DEMAND

    PER DAY (d)

    LEAD

    TIME (L)

    REORDER

    POINT (R)

    COST (C)

    ANNUAL

    PURCHASE

    COST

    ANNUAL

    ORDERING COST

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/31 (6) (7)=(5)*(6) (8) (9)=(1)*(8) (10)=(1)*100/(4)

    13,182$ 168 10 1682 9.18$ 47,855.34$ 39.55$

    5,231$ 26 28 742 12.23$ 10,040.83$ 15.69$

    7,088$ 49 28 1361 8.75$ 13,186.25$ 21.26$4,792$ 22 28 622 8.75$ 6,028.75$ 14.38$

    9,947$ 96 10 957 9.18$ 27,246.24$ 29.84$

    7,052$ 48 28 1348 8.75$ 13,055.00$ 21.16$

    47,292$ 409 132 6712 56.84$ 117,412.41$ 141.88$

    OPTIMAL ORDER

    QUANTITY (Q) per year

    DEMAND

    PER DAY (d)

    LEAD

    TIME (L)

    REORDER

    POINT (R)

    COST (C)

    ANNUAL

    PURCHASE

    COST

    ANNUAL

    ORDERING COST

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/31 (6) (7)=(5)*(6) (8) (9)=(1)*(8) (10)=(1)*100/(4)

    14,672$ 208 10 2083 9.18$ 59,284.44$ 44.02$

    5,419$ 28 28 796 12.23$ 10,774.63$ 16.26$

    7,683$ 57 28 1600 8.75$ 15,496.25$ 23.05$

    5,266$ 27 28 751 8.75$ 7,280.00$ 15.80$

    10,351$ 104 10 1037 9.18$ 29,504.52$ 31.05$

    7,294$ 51 28 1442 8.75$ 13,965.00$ 21.88$

    50,685$ 476 132 7708 56.84$ 136,304.84$ 152.05$

    OPTIMAL ORDER

    QUANTITY (Q) per year

    DEMAND

    PER DAY (d)

    LEAD

    TIME (L)

    REORDER

    POINT (R)

    COST (C)

    ANNUAL

    PURCHASE

    COST

    ANNUAL

    ORDERING COST

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/30 (6) (7)=(5)*(6) (8) (9)=(1)*(8) (10)=(1)*100/(4)

    7,441$ 55 10 554 9.18$ 15,247.98$ 22.32$

    2,273$ 5 28 145 12.23$ 1,895.65$ 6.82$

    4,336$ 19 28 526 8.75$ 4,935.00$ 13.01$

    2,950$ 9 28 244 8.75$ 2,283.75$ 8.85$

    5,967$ 36 10 356 9.18$ 9,804.24$ 17.90$

    4,000$ 16 28 448 8.75$ 4,200.00$ 12.00$

    26,966$ 140 132 2272 56.84$ 38,366.62$ 80.90$

    OPTIMAL ORDER

    QUANTITY (Q) per year

    DEMAND

    PER DAY (d)

    LEAD

    TIME (L)

    REORDER

    POINT (R)

    COST (C)

    ANNUAL

    PURCHASE

    COST

    ANNUAL

    ORDERING COST

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/31 (6) (7)=(5)*(6) (8) (9)=(1)*(8) (10)=(1)*100/(4)

    7,857$ 60 10 597 9.18$ 17,001.36$ 23.57$

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    2,608$ 7 28 184 12.23$ 2,494.92$ 7.82$

    4,698$ 21 28 598 8.75$ 5,792.50$ 14.09$

    2,787$ 8 28 210 8.75$ 2,038.75$ 8.36$

    4,683$ 21 10 212 9.18$ 6,040.44$ 14.05$

    4,107$ 16 28 457 8.75$ 4,427.50$ 12.32$

    26,739$ 133 132 2259 56.84$ 37,795.47$ 80.22$

    OPTIMAL ORDER

    QUANTITY (Q) per year

    DEMAND

    PER DAY (d)

    LEAD

    TIME (L)

    REORDER

    POINT (R)

    COST (C)

    ANNUAL

    PURCHASE

    COST

    ANNUAL

    ORDERING COST

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/30 (6) (7)=(5)*(6) (8) (9)=(1)*(8) (10)=(1)*100/(4)

    13,013$ 169 10 1693 9.18$ 46,634.40$ 39.04$

    4,827$ 23 28 652 12.23$ 8,548.77$ 14.48$

    7,095$ 50 28 1409 8.75$ 13,212.50$ 21.28$

    4,590$ 21 28 590 8.75$ 5,530.00$ 13.77$

    9,652$ 93 10 932 9.18$ 25,658.10$ 28.96$

    6,512$ 42 28 1187 8.75$ 11,130.00$ 19.53$

    45,688$ 400 132 6464 56.84$ 110,713.77$ 137.06$

    OPTIMAL ORDER

    QUANTITY (Q) per year

    DEMAND

    PER DAY (d)

    LEAD

    TIME (L)

    REORDER

    POINT (R)

    COST (C)

    ANNUAL

    PURCHASE

    COST

    ANNUAL

    ORDERING COST

    (4)=sqrt(2*(1)*100/0.006) (5)=(1)/31 (6) (7)=(5)*(6) (8) (9)=(1)*(8) (10)=(1)*100/(4)

    17,240$ 288 10 2876 9.18$ 81,858.06$ 51.72$6,424$ 40 28 1118 12.23$ 15,140.74$ 19.27$

    9,187$ 82 28 2287 8.75$ 22,155.00$ 27.56$

    6,288$ 38 28 1071 8.75$ 10,377.50$ 18.86$

    12,942$ 162 10 1621 9.18$ 46,129.50$ 38.83$

    8,668$ 73 28 2036 8.75$ 19,722.50$ 26.00$

    60,749$ 682 132 11010 56.84$ 195,383.30$ 182.25$

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    Sep Q3 Oct Nov Dec Q4 Total

    1661 13,332 1852 5080 8917 15849 44,843

    155 1,857 204 699 1238 2141 6,139

    564 3,842 662 1510 2532 4704 12,936

    261 1,782 233 632 1186 2051 6,0181068 7,250 658 2795 5025 8478 24,434

    480 3,568 506 1272 2254 4032 11,401

    4,189 31,631 4,115 11,988 21,152 37,255 105,771

    Sep Q3 Oct Nov Dec Q4 Total

    0 16,000 5000 12000 0 17000 48,000

    500 2,000 250 1000 1000 2250 6,500

    0 4,000 0 2000 2000 4000 13,000

    500 1,250 1000 0 1750 2750 4,500

    0 10,000 0 1000 9000 10000 24,000

    500 3,500 500 1000 4500 6000 12,000

    1,500 36,750 6,750 17,000 18,250 42,000 108,000

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    ANNUAL HOLDING

    COSTTOTAL COST (TC)

    RETAIL

    PRICETOTAL SALES MARGIN

    (11)=(4)*0.006/2 (12)=(9)+(10)+(11) (13) (14)=(13)*(1) (15)=(14)-(12)

    25.78$ 20,385.26$ $ 14.95 33,114.25$ 12,728.99$

    8.36$ 2,866.31$ 29.95$ 6,978.35$ 4,112.04$

    13.37$ 5,241.74$ 24.95$ 14,870.20$ 9,628.46$

    8.61$ 2,178.47$ 24.95$ 6,162.65$ 3,984.18$

    19.26$ 11,384.99$ 14.95$ 18,478.20$ 7,093.21$

    12.06$ 4,267.87$ 24.95$ 12,100.75$ 7,832.88$

    87.44$ 46,324.64$ 134.70$ 91,704.40$ 45,379.76$

    ANNUAL HOLDING

    COSTTOTAL COST (TC)

    RETAIL

    PRICETOTAL SALES MARGIN

    (11)=(4)*0.006/2 (12)=(9)+(10)+(11) (13) (14)=(13)*(1) (15)=(14)-(12)

    23.06$ 16,322.27$ $ 14.95 26,506.35$ 10,184.08$

    8.81$ 3,185.20$ 29.95$ 7,757.05$ 4,571.85$

    11.99$ 4,215.22$ 24.95$ 11,951.05$ 7,735.83$8.16$ 1,958.82$ 24.95$ 5,538.90$ 3,580.08$

    14.56$ 6,519.39$ 14.95$ 10,569.65$ 4,050.26$

    11.68$ 4,004.62$ 24.95$ 11,352.25$ 7,347.63$

    78.27$ 36,205.52$ 134.70$ 73,675.25$ 37,469.73$

    ANNUAL HOLDING

    COSTTOTAL COST (TC)

    RETAIL

    PRICETOTAL SALES MARGIN

    (11)=(4)*0.006/2 (12)=(9)+(10)+(11) (13) (14)=(13)*(1) (15)=(14)-(12)

    25.40$ 19,796.99$ $ 14.95 32,157.45$ 12,360.46$

    9.83$ 3,957.72$ 29.95$ 9,643.90$ 5,686.18$

    13.24$ 5,136.47$ 24.95$ 14,570.80$ 9,434.33$

    9.96$ 2,916.18$ 24.95$ 8,258.45$ 5,342.27$

    19.27$ 11,403.38$ 14.95$ 18,508.10$ 7,104.72$

    11.66$ 3,987.07$ 24.95$ 11,302.35$ 7,315.28$

    89.36$ 47,197.80$ 134.70$ 94,441.05$ 47,243.25$

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    ANNUAL HOLDING

    COSTTOTAL COST (TC)

    RETAIL

    PRICETOTAL SALES MARGIN

    (11)=(4)*0.006/2 (12)=(9)+(10)+(11) (13) (14)=(13)*(1) (15)=(14)-(12)19.59$ 11,780.40$ $ 14.95 19,121.05$ 7,340.65$

    8.83$ 3,197.46$ 29.95$ 7,787.00$ 4,589.54$

    11.67$ 3,995.84$ 24.95$ 11,327.30$ 7,331.46$

    8.85$ 2,301.45$ 24.95$ 6,511.95$ 4,210.50$

    18.44$ 10,447.01$ 14.95$ 16,953.30$ 6,506.29$

    10.44$ 3,197.12$ 24.95$ 9,056.85$ 5,859.73$

    77.82$ 34,919.28$ 134.70$ 70,757.45$ 35,838.17$

    ANNUAL HOLDING

    COSTTOTAL COST (TC)

    RETAIL

    PRICETOTAL SALES MARGIN

    (11)=(4)*0.006/2 (12)=(9)+(10)+(11) (13) (14)=(13)*(1) (15)=(14)-(12)

    23.01$ 16,248.72$ $ 14.95 26,386.75$ 10,138.03$

    7.82$ 2,510.57$ 29.95$ 6,109.80$ 3,599.23$

    11.87$ 4,136.25$ 24.95$ 11,726.50$ 7,590.25$

    8.92$ 2,336.58$ 24.95$ 6,611.75$ 4,275.17$

    18.42$ 10,419.42$ 14.95$ 16,908.45$ 6,489.03$

    11.06$ 3,592.13$ 24.95$ 10,179.60$ 6,587.47$

    81.11$ 39,243.67$ 134.70$ 77,922.85$ 38,679.18$

    ANNUAL HOLDING

    COSTTOTAL COST (TC)

    RETAIL

    PRICETOTAL SALES MARGIN

    (11)=(4)*0.006/2 (12)=(9)+(10)+(11) (13) (14)=(13)*(1) (15)=(14)-(12)

    44.09$ 59,565.39$ $ 14.95 96,861.05$ 37,295.66$

    16.09$ 10,586.67$ 29.95$ 25,846.85$ 15,260.18$

    23.28$ 15,857.82$ 24.95$ 45,084.65$ 29,226.83$

    16.05$ 7,548.36$ 24.95$ 21,432.05$ 13,883.69$31.27$ 29,989.35$ 14.95$ 48,737.00$ 18,747.65$

    22.16$ 14,368.07$ 24.95$ 40,843.15$ 26,475.08$

    152.95$ 137,915.66$ 134.70$ 278,804.75$ 140,889.09$

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    ANNUAL HOLDING

    COSTTOTAL COST (TC)

    RETAIL

    PRICETOTAL SALES MARGIN

    (11)=(4)*0.006/2 (12)=(9)+(10)+(11) (13) (14)=(13)*(1) (15)=(14)-(12)

    39.55$ 47,934.43$ $ 14.95 77,934.35$ 29,999.92$

    15.69$ 10,072.22$ 29.95$ 24,588.95$ 14,516.73$

    21.26$ 13,228.78$ 24.95$ 37,599.65$ 24,370.87$14.38$ 6,057.50$ 24.95$ 17,190.55$ 11,133.05$

    29.84$ 27,305.92$ 14.95$ 44,371.60$ 17,065.68$

    21.16$ 13,097.31$ 24.95$ 37,225.40$ 24,128.09$

    141.88$ 117,696.16$ 134.70$ 238,910.50$ 121,214.34$

    ANNUAL HOLDING

    COSTTOTAL COST (TC)

    RETAIL

    PRICETOTAL SALES MARGIN

    (11)=(4)*0.006/2 (12)=(9)+(10)+(11) (13) (14)=(13)*(1) (15)=(14)-(12)

    44.02$ 59,372.47$ $ 14.95 96,547.10$ 37,174.63$

    16.26$ 10,807.14$ 29.95$ 26,385.95$ 15,578.81$

    23.05$ 15,542.35$ 24.95$ 44,186.45$ 28,644.10$

    15.80$ 7,311.60$ 24.95$ 20,758.40$ 13,446.80$

    31.05$ 29,566.62$ 14.95$ 48,049.30$ 18,482.68$

    21.88$ 14,008.76$ 24.95$ 39,820.20$ 25,811.44$

    152.05$ 136,608.95$ 134.70$ 275,747.40$ 139,138.45$

    ANNUAL HOLDING

    COSTTOTAL COST (TC)

    RETAIL

    PRICETOTAL SALES MARGIN

    (11)=(4)*0.006/2 (12)=(9)+(10)+(11) (13) (14)=(13)*(1) (15)=(14)-(12)

    22.32$ 15,292.63$ $ 14.95 24,831.95$ 9,539.32$

    6.82$ 1,909.29$ 29.95$ 4,642.25$ 2,732.96$

    13.01$ 4,961.02$ 24.95$ 14,071.80$ 9,110.78$

    8.85$ 2,301.45$ 24.95$ 6,511.95$ 4,210.50$

    17.90$ 9,840.04$ 14.95$ 15,966.60$ 6,126.56$

    12.00$ 4,224.00$ 24.95$ 11,976.00$ 7,752.00$

    80.90$ 38,528.42$ 134.70$ 78,000.55$ 39,472.13$

    ANNUAL HOLDING

    COSTTOTAL COST (TC)

    RETAIL

    PRICETOTAL SALES MARGIN

    (11)=(4)*0.006/2 (12)=(9)+(10)+(11) (13) (14)=(13)*(1) (15)=(14)-(12)

    23.57$ 17,048.50$ $ 14.95 27,687.40$ 10,638.90$

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    7.82$ 2,510.57$ 29.95$ 6,109.80$ 3,599.23$

    14.09$ 5,820.69$ 24.95$ 16,516.90$ 10,696.21$

    8.36$ 2,055.47$ 24.95$ 5,813.35$ 3,757.88$

    14.05$ 6,068.54$ 14.95$ 9,837.10$ 3,768.56$

    12.32$ 4,452.14$ 24.95$ 12,624.70$ 8,172.56$

    80.22$ 37,955.91$ 134.70$ 78,589.25$ 40,633.34$

    ANNUAL HOLDING

    COSTTOTAL COST (TC)

    RETAIL

    PRICETOTAL SALES MARGIN

    (11)=(4)*0.006/2 (12)=(9)+(10)+(11) (13) (14)=(13)*(1) (15)=(14)-(12)

    39.04$ 46,712.48$ $ 14.95 75,946.00$ 29,233.52$

    14.48$ 8,577.73$ 29.95$ 20,935.05$ 12,357.32$

    21.28$ 13,255.07$ 24.95$ 37,674.50$ 24,419.43$

    13.77$ 5,557.54$ 24.95$ 15,768.40$ 10,210.86$

    28.96$ 25,716.01$ 14.95$ 41,785.25$ 16,069.24$

    19.53$ 11,169.07$ 24.95$ 31,736.40$ 20,567.33$

    137.06$ 110,987.90$ 134.70$ 223,845.60$ 112,857.70$

    ANNUAL HOLDING

    COSTTOTAL COST (TC)

    RETAIL

    PRICETOTAL SALES MARGIN

    (11)=(4)*0.006/2 (12)=(9)+(10)+(11) (13) (14)=(13)*(1) (15)=(14)-(12)

    51.72$ 81,961.50$ $ 14.95 133,309.15$ 51,347.65$19.27$ 15,179.28$ 29.95$ 37,078.10$ 21,898.82$

    27.56$ 22,210.12$ 24.95$ 63,173.40$ 40,963.28$

    18.86$ 10,415.23$ 24.95$ 29,590.70$ 19,175.47$

    38.83$ 46,207.15$ 14.95$ 75,123.75$ 28,916.60$

    26.00$ 19,774.51$ 24.95$ 56,237.30$ 36,462.79$

    182.25$ 195,747.79$ 134.70$ 394,512.40$ 198,764.61$