or better clarification i take 100 kg of soybean priced of Rs.4000 (according to you)

now using a oil extractor costs you Rs. 20-30 for electricity, and add Rs. 70-80 as all other expendituresso your total expenditure is Rs. 4100

now came to other side using our machine we get 2 things 1. 14 kg oil @Rs.90 = 12602. 86 kg soybean @Rs.38(reduce price as above stated reason) = 3268 so total earning = 1260+3268 = 4528

so total profit = 428in percentage 10.43%