A dishonest fruit seller professes to sell his goods at the cost price but weighs 800 grams for a kg weight. Find his gain percent.	Answers:
A) 100%  B) 150%  C) 50%  D) 200%  E) None of these
He gives 800 grams but charges the price of 1000 grams (1 kg) ⇒ on every 800 grams, he gains (1000 – 800) grams i.e. 200 grams.   ∴ His gain % = 200⁄800 × 100% = 25%   Short cut : Gain % = error/true weight−error=100%   100%nswer 100%
<result>A</result>
A dishonest fruit seller professes to sell his goods at the cost price but weighs 800 grams for a kg weight. Find his gain percent.