A shopkeeper earns 25% profit on selling price. Find his profit percentage on cost price.

33.33% 48% 25% 32%

33.33%

S × 25% = \(\frac{1}{4}\)S ⇒ Let SP = 4 Profit = 1 CP    = 3 Profit on CP = \(\frac{(4-3)}{3}\) × 100 = 33.33%