SOLUTION: To make a 6.0 L of a fruit punch that contains 12% v/v ethanol, how much 90% ethanol must be mixed with how much fruit juice?

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Question 1111253: To make a 6.0 L of a fruit punch that contains 12% v/v ethanol, how much 90% ethanol must be mixed with how much fruit juice?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x, liters of 90% ethanol
6-x, liters of fruit juice, 0% ethanol

90x%2B0=12%2A6

90x=12%2A6
x=%2812%2A6%29%2F90

highlight%28x=0.8%29

5.2 liters fruit juice
and
0.8 liters ethanol