In a certain chemical, the ratio of zinc to copper is 3 to 16. Ajar of the chemical contains 560 grams of
copper. How many grams of zinc does it contain?
You can use a simple proportion here. The grams of zinc are x. You multiply 16 by x and 560 by 3. You get 16x=1680. Divide both sides by 16. x=105. In conclusion, the answer is 105 grams of zinc.
