Question

In a certain​ chemical, the ratio of zinc to copper is 3 to 13 . A jar of the chemical contains 585 of copper. How many grams of zinc does it​ contain?

Answer 1

Answer: 135 grams of Zinc

Explanation:

The ratio of Zinc to Copper in this scenario is 3:13 and in this jar there is 585 of Copper.

Using direct proportion, the grams of Zinc in the jar is:

3 : 13

x : 585

Cross -multiplying will give:

1,755 = 13x

x = 1,755/13

x = 135 grams of Zinc