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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.

A
6.6 kg
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B
5.4 kg
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C
10.2 kg
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D
10.8 kg
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Solution

The correct option is D 10.8 kg
Given,

Ratio of copper and zinc in an alloy =9:8

Weight of zinc in an alloy =9.6 kg

Let x kg be the weight of copper in the alloy.

Hence, the weight of copper can be calculated as follows:

9:8=x:9.6

8×x=9×9.6

x=86.48

x=10.8 kg

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