By selling 100 oranges,  a vendor gains the selling price of 25 oranges. His gain percent is?

25% 33.33% 44% 20%

33.33%

SP of 100 - CP of 100 = SP of 25( = Profit) SP of 75 = CP of 100 SP of 3 = CP of 4 CP   :  SP = 3 : 4 Gain = 1 Gain% = \(\frac{1}{3}\) × 100% = 33.33%