By selling an article, a man makes a profit of 25% of its selling price. His profit percent is = ?

Explanation:-

According to the question, 25% of selling price $$= \frac{{1 \to {\text{Profit}}}}{{4 \to {\text{Selling price}}}}$$ Cost price = Selling price - Profit
Cost price = 4 - 1
Cost price = 3 $$\eqalign{ & {\text{Profit }}\% \cr & = \frac{{{\text{Profit}}}}{{{\text{Cost price}}}} \times 100 \cr & = \frac{1}{3} \times 100 \cr & = 33\frac{1}{3}\% \cr}$$