Question

A certain drug is made from only two ingredients compound a and compound b. There are only 7 mL of Compound a used for every 4 mL of Compound B if a chemist wants to make 748 mL of the drug how many milliliters of compound be unneeded compound.

Answer 1

To find the amount of Compound B unneeded, we can solve a proportion to determine the amount of Compound B needed for 748 mL of Compound A and then subtract that from the total amount of Compound B used for 748 mL of Compound A.

Step-by-step explanation:

In this problem, we are given that for every 7 mL of Compound A, 4 mL of Compound B is used. We are asked to find how many milliliters of Compound B are left unused when making 748 mL of the drug. To solve this problem, we need to calculate how many milliliters of Compound B are needed for 748 mL of Compound A.

We can set up a proportion to find out:

7 mL Compound A / 4 mL Compound B = 748 mL Compound A / X

By solving this proportion, we can find the value of X, which represents the amount of Compound B needed for 748 mL of Compound A. Then, to find the amount of Compound B unneeded, we subtract X from the total amount of Compound B used for 748 mL of Compound A.