# What will be the Gain? If

The cost price of 36 books is equal to the selling of 30 books, the gain is

- 20%
- 16%
- 18%
- 15%

**Answer: (a) 20%
Explanation:-**

Cost price of 36 books = selling price of 30 books

Gain = 36 – 30 = 6 books

Gain% = 6 x 100/30 = 20%

Hence, the gain is 20%.