40 percent of the cost price of an article is equal to the 30 percent of its selling price. What is the profit percentage?

Correct option is B

Given:
40% of Cost Price (CP) = 30% of Selling Price (SP)
Formula Used:$$\text{Profit Percentage} = \left( \frac{\text{SP} - \text{CP}}{\text{CP}} \right) \times 100$$​
Solution:
0.4 × CP = 0.3 × SP
​$$\frac{\text{SP}}{\text{CP}} = \frac{4}{3}$$​​
Profit Percentage = $$\left( \frac{4}{3} - 1 \right) \times 100 = 33.33\%$$​​