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.

Answer 1

ratio of weight of copper and zinc=9:8
let zinc be 8c and copper be 9c
Given weight of zinc in alloy=9.6kg
ATQ
8c=9.6
c=1.2
weight of copper=9c=9*1.2=10.8kg

Answer 2

Given:

Cu : Zn =9 : 8 :: x: 9.6

8x = 96 × 9

Therefore x = __96_×_ 9__

8 × 10

(Cancellation )

= 54/5 = 10.8

Therefore, weight of Cu in the alloy

= 10.8 kg

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