Question

If an alloy is to contain copper and zinc in the rao 9 : 4, then the zinc required (in kg) to be melted with 24 kg of copper is:

Answer 1

Answer:

it's 10.7 kg

hope it helps you thanks

Explanation:

9x/13 is copper

4x/13 is zinc

if 9x/13=24 kg x=104/3

than zinc is 4x/13

ie. 4(104/3)/13=416/3×1/13=32/3=10.7 kg