While selling 15 copies, a man gains the cost price of 5 copies. Find his profit percent.?

50

To find the profit percentage, we need to know the profit made and the cost price.

Given that the man gained the cost price of 5 copies while selling 15 copies, we can deduce that the profit he made is the selling price of the 15 copies minus the cost price of the 10 copies (15 - 5 copies).

However, the problem does not provide any information about the selling price or the cost price of each copy. Therefore, it is not possible to calculate the exact profit percentage without additional information.

Nevertheless, I can guide you through the process if you can provide either the selling price or the cost price of each copy.

If the price is p and the cost is c, then

15p = 20c
p/c = 20/15 = 1.333

so, he made 33% profit