Question

The ratio of zinc and copper in the alloy is 7:9.If the weight of copper in the alloy is 11.7 kg find the weight of zinc in it ​

Answer 1

Step-by-step explanation:

Let the number be x

Amount of copper = 9x

Amount of zinc = 7x

If amount of copper is 11.7 kg then,

9x = 11.7 kg

x = 11.7/9

= 1.3 kg

therefore,

amount of zinc is 7 × 1.3

= 9.1 kg

Answer 2

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