A lab technician mixed a 540 540 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

3% of 540 ml = 0.03 x 540 = 16.2 ml of alcohol

97% of 540 ml = 0.97 x 540 = 523.8 ml water

Add them together to get 540 mls

Answer 2

X+y = 540

water + alcohol = mixture

0% of x + 100%x = 540 * 3%

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y = 540 - x

x = 540 * 0.03 = 16.2

y = 540-16.2 = 523.8

523.8 ml of water and 16.2 ml of water