SOLUTION: In a 30 liters of 15% alcohol solution, how much pure alcohol should be added to obtain a 32% alcohol solution?

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Question 816693: In a 30 liters of 15% alcohol solution, how much pure alcohol should be added to obtain a 32% alcohol solution?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
{amountJustAlcohol}/{amountOfSolution}={concentrationWanted}

x = amount of pure alcohol to add

%2830%2A15%2Bx%2A100%29%2F%28x%2B30%29=32
Solve for the one variable, x.