• # question_answer A dishonest grocer sells rice at a profit of 10% and also uses weights which are 20% less than the marked weight. The total gain earned by him will be A)  35%                 B)  37.5% C)  40%                 D)  30.5%

[b] Let us consider a packet or rice marked 1 kg. It's actual Weight is 80% of 1000 gm = 800 gm Let C.P. of each gm be Rs. 1, Then, C.P. of this packet = Rs. 800 S.P. of this packet = 110% of C.P. of 1 kg $=\frac{110}{100}\times 1000=Rs.\,\,1110$ $\therefore \,\,\,Gain\,\,%=\frac{(1100-\,800)}{1100}\times 100=37.5%$