Question

A dishonest dealer claims that he sells his goods at the cost price but uses a false weight of 850 gm instead of 1 kg weight. Find his gain percent.

Answer 1

price of 1000gm=X
price of 850gm=850X/1000=0.85X
profit=X-0.85X=0.15X
$profit \: percent = \frac{ profit}{cp} \times 10 \\ = \frac{0.15x}{0.85x} \times 100 = 17.64\%$
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