Question

the ratio of zinc and copper in an alloy is 7:9 . if the weight of copper in the alloy is 11.7kg find the weight of in it. plz solve it

Answer 1

Let the copper be 9x
and zinc be 7x
9x = 11.7
x = 11.7 / 9
x = 1.3 kg
weight of zinc = 7x = 7 × 1.3 = 9.1 kg

Answer 2

If question is about finding the weight of zinc then 9/7=11.7/X

X=11.7*7/9

X=1.3*7

X=9.1