If I purchased 11 books for Rs. 10 and sold all the books at the rate of 10 books for Rs. 11, the profit per cent is?

Question

Accepted Answer

Suppose I purchased 110 books
∵ C.P. = Rs. (10/11) x 110 = Rs. 100
⇒ S.P. = Rs. (11/10) x 110 = Rs. 121
∴ Gain % = 21%

Discussion & Comments