A businessman sold 2/5 of his stock at a gain of 25% and the remaining at a gain of 20%. The overall percentage of gain is
ALTERNATE MTEHOD: Let CP = 100 So he sold 2/5th I,e 40 in 25% gain so SP1 = 40+25%of 40 = 40 +10 = 50 and he sold remaining 3/5th I,e 60 in 20% gain so SP2 = 60+20%of 60 = 60 +20 = 72 So total SP = 50 +72 = 122 Hence Profit% = 22%