Question

The ratio of copper and zinc in an alloy( Alloy is a mixture of two or more metals) is 8:9. If the weight of zinc in the alloy is 99 kg, find the weight of copper in the alloy. (An explanation will be really helpful.

Answer 1

Weight of zinc in the alloy =9.8kg

The ratio of copper and zinc in an alloy =9:7.

Let,

Weight of copper =9x

Weight of zinc =7x

9.8=7x

x=1.4kg

∴ Weight of copper in the alloy =9x

=9(1.4)

=12.6kg

Answer 2

Step-by-step explanation:

let c:z=8x:9x

here

9x=99kg(given)

so

x=99/9=11

here

copper=8x=8×11=88kg