1. A trader had 9 quintals of wheat. He sold a part of it at 10% profit and the rest at 20% profit, so that he made a total profit of 14 %. How much wheat did he sell at 20% profit?
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By: anil on 05 May 2019 02.16 am
1 quintal = 100 kg => 9 quintals = 900 kg Let the part he sold at 20% profit = $$x$$ kg => Part he sold at 10% profit = $$(900 - x)$$ kg Total profit made by the trader = 14% => $$20x + 10 (900 - x) = 14 imes 900$$ => $$20x + (10 imes 900) - 10x = 14 imes 900$$ => $$10x = 900 imes (14 - 10)$$ => $$x = 90 imes 4 = 360$$ kg => Ans - (B)
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