Question

the ratio of Copper and Zinc in an alloy is 9 ratio 5 if the weight of copper is the alloy is 48.6 gram find the weight of zinc in the alloy

Answer 1

$copper \: 9 = 48.6 \\ 5 = 48.6 \times \frac{5}{9} = 27 \\ copper = 27 \: gram$