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Question
The ratio of copper and zinc in an alloy is 9 : 8. If the weight of zinc, in the alloy, is 9.6 kg; find the weight of copper in the alloy.
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Solution
Let the weight of copper = x kg
Weight of zinc = 9.6 kg.
According to question,
9 : 8 = x : 9.6
⇒ 8 × x = 9 × 9.6
⇒ x = `(9xx9.6)/8` = 9 × 1.2 = 10.8 kg.
Weight of copper in alloy = 10.8
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