The ratio of zinc and copper in an alloy is seven ratio nine if weight of copper in the alloy is eleven point kg then find the weight of zinc in the alloy

Answer 1

7/9 = z/11

Cross multiply to solve for z.

Answer 2

Copper=c
Zinc=z
APQ (As Per Question)

C:Z=9:7
11.7/Z=9/7
Z=9*10/117*9
Z=9.1kg