Question

The ratio of copper and zinc in an alloy is 3 : 4. If the total weight of the alloy is 30.8 kg, find the
weight of zinc in the alloy.​

Answer 1

Answer:

let the retio=x

the ratio of copper=3x

the ratio of zinc in alloy=4x

according to the question

total weight=30.8kg

copper + zinc in alloy=30.8

3x+4x=30.8

7x=30.8

x=30.8/7

x=4.4

weight of zinc in the alloy= 4x

=4×4.4

=17.6kg

weight of opper= 3x

=3×4.4

=13.2