SOLUTION: In a chemistry​ class, 12 liters of a 15% alcohol solution must be mixed with a 20% solution to get a 16​% solution. How many liters of the 20​% solution are̴
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Question 1088228: In a chemistry class, 12 liters of a 15% alcohol solution must be mixed with a 20% solution to get a 16% solution. How many liters of the 20% solution are needed? Answer by jorel1380(3719) (Show Source):
You can put this solution on YOUR website! Let n be the amount of 20% solution needed. Then:
12(.15)+n(.2)=(12+n).16
1.8+.2n=1.92n+.16n
.04n=.12
n=3
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