Question

A bookseller sold 500 copies of a book at a profit of 20 %. If he gains a profit of Rs. 5/book, what is thecost price of the book? (​

Answer 1

Step-by-step explanation:

Copy sold= 500

total cost price=x

cp per copy= x/500

profit=20%

Profit%= profit/cp × 100

20= 5/x/500 ×100

20= 2500/x × 100

x= 2500×100/20

= 2500×5

= 12500

Therefore cp per copy= x/500= 12500/500= 125/5= 25.