SIMPLE INTEREST AND COMPOUND INTEREST1. Find the simple interest on Rs 6240 at 6 2/3% p.a. for the period from Dec 28, 2007 to May 22, 2008. Also find the amount. a) Rs 166.40, Rs 6406.40 b) Rs 176.30, Rs 5670.90 c) Rs 160.40, Rs 7861.80 d) Rs 144.78, Rs 5780.722. In what time will the simple interest on Rs 9540 be Rs 3339 at 101/2% per annum? a) 3 years 4 months b) 3 years only c) 3 years 2 months d) 3 years 6 months3. In how much time will Rs 1200 amount to Rs 1726.50 at 93/4% p.a. simple interest? a) 41/2 years b) 61/4 years c) 72/5 years d) 31/8 years4. In what time will the simple interest on a certain sum of money at 71/2% p.a. be 3/8 of itself? a) 8 years b) 6 years c) 5 years d) Insufficient Data5. At what rate per cent p.a. will be Rs 1620 amount to Rs 1962 in 3 years 2 months? a) 6.60% b) 5.67% c) 4.99% d) 3.67% 6. Simple interest on a certain sum is 4/9 of the sum. Find the rate per cent and the time if both are numerically equal. a) 6 years 8 months b) 3 years 5 months c) 7 years 9 months d) Cannot be determined7. What sum will amount to Rs 5556 in 2 years 4 months at 62/4% p.a. simple interest? a) Rs 4789 b) Rs 8768 c) Rs 6754 d) Rs 48008. A certain sum amounts to Rs 5916 in 3 years and to Rs 6960 in 5 years at simple interest. Find the sum and the rate per cent per annum. a) 16% p.a. b) 24% p.a. c) 10% p.a. d) 12% p.a.9. The simple interest on a certain sum for 15 months at 7.5% p.a. exceeds the simple interest on the same sum for 18 months at 12.5% p.a. by Rs 32.50. Find the sum. a) Rs 3120 b) Rs 4332 c) Rs 2345 d) Rs 456710. Divide Rs 8000 into two parts such that if one part be lent at 7.5% p.a. for 2 years and the other part at 8% p.a. for 3 years, the total interest received is 1416. a) Rs 1200 b) Rs 2309 c) Rs 2400 d) Rs 320011. A sum doubles in 20 years at simple interest. How much is the rate? a) 5% p.a. b) 4% p.a. c) 3% p.a. d) None of these12. A Sum of Rs 5984 becomes Rs 8976 in 6 years at SI. What is the rate? a) 12% p.a. b) 8.33% p.a. c) 4.56% p.a. d) 5.34% p.a.13. A certain sum of money becomes Rs 1250 in a span of 5 years at simple and further to Rs 1700 in the span of 8 years. At the same rate, what would it amount to at the end of 12 years? a) Rs 2250 b) Rs 3492 c) Rs 2050 d) Rs 230014. Find the amount and the compound interest on Rs 8000 at 5% p.a., for 2 years, compounded annually a) Rs 8820, Rs 820 b) Rs 7856, Rs 760 c) Rs 8778, Rs 789 d) Rs 7890, Rs 67815. What is the difference between the CI and SI on a sum of Rs 1600 at 5% p.a. for period of 2 years? a) Rs 8 b) Rs 4 c) Cannot be determined d) None of these 16. What is the difference between the compound interest and the simple interest on a capital of Rs 16000 at the rate of 15% p.a. for a period of 2 years? a) Rs 360 b) Rs 170 c) Rs 670 d) Rs 78017. The difference between the compound interest and simple interest on a certain sum at 5% for 2 years is Rs 1.50. the sum is : a) Rs 600 b) Rs 560 c) Rs 670 d) Data Insufficient 18. Exchange rate of dollar Vs rupee increases at the rate of 5% per month. If the current is Rs 40 per dollar, what will be the rate at the end of 2 months? a) Rs. 45 b) Rs 44.1 c) Rs 34.6 d) Rs 45.619. A sum of money doubles itself in 4 years at compound interest. It will amount to 8 times itself at the same rate of interest in a) 18 years b) 14 years c) 12 years d) 11 years20. The rate of interest at which an amount of Rs 1800 on compound interest becomes Rs 1984.50 in 2 years is: a) 3% b) 4% c) 5% d) 7%