Question

A certain drug is made from only two ingredients: compound a and compound

b. there are 5 milliliters of compound a used for every 4 milliliters of compound
b. if a chemist uses 308 milliliters of compound b, how many milliliters of the drug will be made?

Answer 1

To find how many milliliters of the drug will be made, you will use proportions to solve for how much of compound a you will need with the indicated amount for compound b.

compound a 5 mL x 77 385 ml

compound b 4 ml x 77 308 ml

Add the two amounts together to get a total: 385 + 308 = 693 mL

There will be 693 mL of the drug.