Question

If the cost price of 20 books is equal to the selling price of 18 books , find the gain percent.

Answer 1

thanks for the question

Answer 2

Answer:

100%

Step-by-step explanation:

Let the cost price be 100

Cost price of 20 books = 20×100 = 2000

Selling price of 18 books = 2000

Selling price of 1 book = 2000/18

Profit = SP - CP

= 2000/18 - 100

= 2000-100/18

= 200/18

Profit % = Profit/CP × 100

= 200/18/100 × 100

= 200/18

= 100%