Question

in a metal alloy the ratio of zinc to Copper is 3 to 18 if there are 396 pounds of copper how much zinc is there

Answer 1

ok

Ratio 3 zinc :: 18 copper

3 : x :: 18 : 396

x = (3 x 396) / 18

x = 1188 / 18

x = 66

There are 66 pounds of zinc