A shirt is bought for $30 and sold for $40. Find the profit percentage.

Correct option is D

Given:
Cost price of the shirt = $30
Selling price of the shirt = $40
Formula Used:
Profit Percentage = $$\frac{\text{Profit}}{\text{Cost Price}}$$​ × 100
Solution:
Profit = 40 - 30 = 10
Profit Percentage = $$\frac{10}{30}$$​× 100 = 33.33%