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 6 milliliters of compound B. If a chemist wants to make 1001 milliliters of the drug, how many milliliters of compound A are needed?

Answer 1

$\frac{5}{6} = \frac{a}{1001}$ where a = compound A

6a = 5,005

a = 834 milliliters