Question
An alloy of copper and tin contains 70% of copper. If 16
kg of more tin is added to the alloy, the copper content gets reduced to 50%. Find the quantity of the new alloy. STSolution
Ratio of copper to tin in the alloy = 7:3 Let the quantity of copper and tin in the alloy be 7x kg and 3x kg, respectively. According to question, 7x = 3x + 16 x = 4 kg So, the quantity of new alloy = 7x + 3x + 16 = 10x + 16 ⇒ 40 + 16 = 56 kg
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