SOLUTION: How many liters of pure alcohol must be added to 10 liters of a 30% solution to obtain an 80% solution?

SOLUTION: How many liters of pure alcohol must be added to 10 liters of a 30% solution to obtain an 80% solution?

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Question 819911: How many liters of pure alcohol must be added to 10 liters of a 30% solution to obtain an 80% solution?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Simple two-part mixture problem that goes like this:

Let u = amount of pure alcohol to add.

Solve for u.
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