A grocer sells rice at 10% profit and uses weights which are 20% less than the market weight. The total gain earned by him is:

$33\frac{1}{3}$% 20% 40% 37.5%

37.5%

Selling rice at 10% profit and uses weights which are 20% less than the market weight means, CP : SP = 10 : 11 weight =   8   : 10     ————————————              80   : 110 = 30(Profit) Profit % = 30 × \(\frac{100}{80d}\) = 37.5%