Question

In a certain? chemical, the ratio of zinc to copper is 4 to 17. A jar of the chemical contains 612 grams of copper. How many grams of zinc does it? contain?

Answer 1

The answer is 144 grams of zinc

Explanation:

proportion zinc to copper = 4/17

4/17 = z/ 612

multiply the extremes

17 . z = 4 . 612

17 . z = 2,448

z = 2,448 / 17

z = 144

The answer is 144 grams of zinc

Always check your answer

4/ 17 = 144/612 = 0.235