arithmetic - a books seller buys 80 books at the marked price of 72 books from a wholesaler if he sells these books giving a discount of 1 what is the profit percent - skillgun

Solution: Let the marked price of each book be Re. 1.
then, C.P. of 80 books = Rs. 72. S.P. of 80 pens = 99% of Rs. 80 = Rs. 79.20.
.'. Profit% = (7.20/72 * 100)% = 10%