Question

an alloy of zinc and copper weights 12 whole 1 upon 2 kg if the alloy the ratio of zinc and copper is 1 ratio 4 find the weight of copper in it​

Answer 1

Let the numbers in the ratio be x

zinc=x

copper=4x

A/q,

x+4x=12 whole 1/2

5x=12 whole 1/2

x=12 whole 1/2 upon 5

x= 2.5kg

zinc=x=2.5kg

copper=2.5×4kg=10 kg