Question

the ratio of zinc and copper in an alloy is 7:9 if the weight of copper in the alloy is 11.7 kg
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Answer 1

Answer:

The weight of in zinc in the alloy is 9.1 Kg

Step-by-step explanation:

Alloy is substance made by combining two or more metallic elements .

in this question the alloy is made by mixing zinc and copper .

Ratio = zinc : copper = 7 : 9

Let us take zinc as 7x and copper as 9x .

If 9x ( copper ) = 11.7 Kg ,

x = 11.7 / 9

x = 1.3

zinc = 7x = 7(1.3) = 9.1 Kg