A person buys a toy for ₹70 and sells it for ₹91. What will be his gain percentage?

Correct option is C

Given:

Cost Price (CP) = ₹70

Selling Price (SP) = ₹91

We need Gain %.

Formula Used:

Gain = SP - CP

$$\text{Gain \%} = \frac{\text{Gain}}{\text{CP}} \times 100$$

Solution:

Gain = 91 - 70 = ₹21

​$$\text{Gain \%} = \frac{21}{70} \times 100 = 30\%$$​