A person's salary was increased by 50% and subsequently decreased by 50%. How much percentage does he lose or gain?

Loss of 25% Gain of 50% Loss of 30% Gain of 20%

Loss of 25%

50% = \(\frac{1}{2}\) Let the salary = 100 Then ATQ, 100 × \(\frac{3}{2}\) × \(\frac{1}{2}\) = 75 So the loss of 100 -75 = 25%