Question

A certain drug is made from only two ingredients: compound A and compound B. There are 3 milliliters of compound A used for every 5 milliliters of compound

B. If a chemist wants to make 680 milliliters of the drug, how many milliliters of compound B are needed

Answer 1

425 ml.

Explanation:

into ratio units of (5+3), you can find out how many times 8 goes into 680. Multiply by 5.