SOLUTION: In the lab, Justin has two solutions that contain alcohol and is mixing them with each other. He uses 3 times as much Solution A as Solution B. Solution A is 17% alcohol and Soluti
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Question 770456: In the lab, Justin has two solutions that contain alcohol and is mixing them with each other. He uses 3 times as much Solution A as Solution B. Solution A is 17% alcohol and Solution B 14% is alcohol. How many milliliters of Solution B does he use, if the resulting mixture has 195 milliliters of pure alcohol? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = ml of solution A needed
Let = ml of solution B needed = ml of alcohol in solution A = ml of alcohol in solution B
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(1)
(2)
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(2)
Substitute (1) into (2)
(2)
(2)
(2)
(2)
He should use 300 ml of solution B
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check:
(1)
(1)
and
(2)
(2)
(2)
(2)
OK
