In a certain​ chemical, the ratio of zinc to copper is 3 to 11. A jar of the chemical contains 396 grams of copper. How many grams of zinc does it​ contain?

Answer 1

The ratio of zinc to copper is 3 to 11, so we can set up the following equation:

3/11 = x/396

To solve for x, we can cross multiply:

11 * x = 3 * 396

11x = 1188

Dividing both sides by 11:

x = 108

Therefore, the jar of the chemical contains 108 grams of zinc.