SOLUTION: if I have 225L of 12% alc how many L of 80%alc do I need to bring the 225L to a 20%alc by volume

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Question 1005836: if I have 225L of 12% alc how many L of 80%alc do I need to bring the 225L to a 20%alc by volume
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Alcohol%2FMixture=TargetFraction

v, amount of the 80% alcohol to add

%28225%2A12%2B80v%29%2F%28v%2B225%29=20