SOLUTION: A the solution in a bucket that holds 30L is 80% alcohol. How much water would be added to make it 60% alcohol?

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Question 749135: A the solution in a bucket that holds 30L is 80% alcohol. How much water would be added to make it 60% alcohol?
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
v = volume in liters of water to add.

30%2A80%2F%2830%2Bv%29=60

solve for v.