SOLUTION: how many liters of a 10% alcohol solution must be mixed with 12 L of 5% alcohol solution to produce an 8% solution?

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Question 876972: how many liters of a 10% alcohol solution must be mixed with 12 L of 5% alcohol solution to produce an 8% solution?
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
v liters to add.

%2810v%2B12%2A5%29%2F%28v%2B12%29=8