The selling price of 5 articles is the same as the cost price of 3 articles. The gain or loss percent is:

20% gain 25% gain 33.33% loss 40% loss

40% loss

ATQ, ⇒ S.P. of 5 =  C.P. of 3 ⇒ C.P. : S.P. = 5 : 3 ⇒ Loss = 5 - 3 = 2 ⇒ Loss percentage = \(\frac{2}{5}\) × 100 = 40%