Question

A lab technician mixed a 530 ml solution of water and alcohol. If 3% of the solution is alcohol, how many milliliters of alcohol were used and how many milliliters of water were used?

Answer 1

Given:
530 ml solution of water and alcohol.

3% of the solution is alcohol.

530 ml * 3% = 15.9 ml of alcohol was used.

530 ml - 15.9 ml = 514.10 ml of water was used.
or
530 m * 97% = 514.10 ml of water.