Question

The ratio of copper and zinc in an alloy is 4:7 if the total weight of the alloy is 7.7 kg,find the weight of copper and zinc

Answer 1

let the weight of copper=4x
and the weight of zinc=7x
total weight=7.7kg
7x+4x=7.7kg
11x=7.7
x=.7kg
hence
weight of copper=4×0.7
2.8kg
weight of zinc=7×0.7
4.9kg

Answer 2

Answer:

Step-by-step explanation:

let the weight of copper=4x

and the weight of zinc=7x

total weight=7.7kg

7x+4x=7.7kg

11x=7.7

x=.7kg

hence

weight of copper=4×0.7

2.8kg

weight of zinc=7×0.7

4.9kg