Question
An alloy of copper and tin contains 60% of copper. If 10
kg of more tin is added to the alloy, the copper content gets reduced to 50%. Find the quantity of the new alloy.Solution
Ratio of copper to tin in the alloy = 3:2 Let the quantity of copper and tin in the alloy be 3x kg and 2x kg, respectively. According to question, 3x = 2x + 10 x = 10 kg So, the quantity of new alloy = 3x + 2x + 10 = 5x + 10 ⇒ 50 + 10 = 60 kg
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