Q:

In a certain​ chemical, the ratio of zinc to copper is 3 to 16. A jar of the chemical contains 736 grams of copper. How many grams of zinc does it​ contain?

Accepted Solution

A:
The jar has 138 grams of zinc.Solution:Given that , In a certain chemical reaction, the ratio of zinc to copper is 3 to 16.  A jar of the chemical contains 736 grams of copper.  We have to find how many grams of zinc does it containLet "n" be the grams of zinc needed for 736 grams of copper  Now, we know that,  16 grams of copper ⇒ 3 grams of zincThen, 736 grams of copper ⇒ n grams of zincSo, by criss cross multiplication,[tex]n \times 16 = 3 \times 736[/tex]16n = 3 x 73616n = 2208n = 138Hence, the jar has 138 grams of zinc.