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 4 milliliters of compound B. If a chemist wants to make 427 milliliters of the drug, how many milliliters of compound B are needed?

Answer 1

The ratio of compound A to compound B is 3:4, which means that for every 3 milliliters of compound A used, 4 milliliters of compound B are used.

To find out how many milliliters of compound B are needed to make 427 milliliters of the drug, we can use the proportion:

3/4 = x/427

where x is the number of milliliters of compound B needed.

To solve for x, we can cross-multiply and simplify:

3 x 427 = 4 x

1281 = 4x

x = 1281/4

x = 320.25

Therefore, 320.25 milliliters of compound B are needed to make 427 milliliters of the drug.