SOLUTION: how many liters of a 40% alcohol solution must be mixed with 10 liters of a solution that is 80% alcohol to get a solution that is 60%alcohol

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Question 278937: how many liters of a 40% alcohol solution must be mixed with 10 liters of a solution that is 80% alcohol to get a solution that is 60%alcohol
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
60% is the midpoint, or average, of 40% and 80%, so use half of each.
--> 10 liters