A man bought two books for Rs 1040. He sold one at a loss of 15% and other at a profit of 36% then he found that each book was sold for the same price. Find the cost of each book.
Ans: Rs 640 and Rs 400
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Step-by-step explanation:
Take cost price of one book = x
Then cost of another book = 1040 - x
He sold one at 15% loss & another at 36% profit , then he found selling price of each book is same
x × (85/100) = (1040-x) × 136/100
5x = 8320 - 8x
13x = 8320
x = Rs. 640
1040 - x = 1040 - 640 = Rs. 400
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