SOLUTION: How many liters of pure alcohol must be mixed with five liters of 20% concentration of alcohol to make a mixture that is 50% alcohol?

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Question 837983: How many liters of pure alcohol must be mixed with five liters of 20% concentration of alcohol to make a mixture that is 50% alcohol?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Study this lesson:

http://www.algebra.com/my/Two-Part-Mixture-with-one-material-quantity-unknown.lesson?content_action=show_dev

It is exactly what you want to know.