Selling price of 12 articles is equal to cost price of 9 articles. Find profit or loss percentage.

25% profit 37.5% loss 25% loss 37.5% profit

25% loss

ATQ,           12S = 9C    ⇒  S → 3,  C → 4 Loss% = \(\frac{(4-3)}{4}\) × 100 = 25%