Question
A dishonest dealer professes to sell his goods at cost
price, but he uses a weight of 990 gm for the kg weight. Find his gain per cent.Solution
Suppose goods cost the dealer Re 1 per kg. He sells for Re 1 what cost him Re 0.99. Gain on Re 0.99 = Re 1- 0.99 = Re 0.01 Gain on Rs. 100 = 0.01 * 100/0.99 = 1.01% Gain% = 1.01% Alternate Method: Gain% = (True weight – False weight) * 100/ False weight = (1000 – 990)*100/990 = 1.01%
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