A dishonest trader says to customers that he sells his goods at a cost price, but he uses a false weight and gains 12.5% as profit. How many grams does he use to weigh 1 kg?

Solution (By Examveda Team)

Let 1000 gm price = Rs. 1000
12.5% of 1000 = Rs. 1125
When he gets profit of 12.5% on 1000 gm
$$\eqalign{ & {\text{Then, }}\frac{{1000}}{{1125}} \times 1\,{\text{kg}} \cr & = \frac{{1000 \times 1000{\text{ gm}}}}{{1125}} \cr & = 888.8{\text{ gm}} \cr} $$