A fruit-seller buys bananas at ₹60 a dozen and sells them at ₹6 each. What is her profit percentage?

Explanation

1. 01

   SP of a dozen = 12 × ₹6 = ₹72.

2. 02

   Profit on a dozen = ₹72 − ₹60 = ₹12.

3. 03

   Profit % = $\frac{12}{60} \times 100 = 20\%$.