Question
A dishonest dealer professes to sell his goods at cost
price, but he uses a weight of 700 gm for the kg weight. Find his approximate gain per cent.Solution
Suppose goods cost the dealer Re 1 per kg. He sells for Re 1 what cost him Re 0.7. Gain on Re 0.7 = Re 1- 0.7 = Re 0.3 Gain on Rs. 100 = 0.3 * 100/0.7 = 42.85% Gain% = 42.85% Alternate Method: Gain% = (True weight – False weight) * 100/ False weight = (1000 – 700)*100/700 = 42.85%
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