SOLUTION: How much water must be added to 10 liters of a 15% alcohol solution to dilute it to a 5% solution

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Question 70236: How much water must be added to 10 liters of a 15% alcohol solution to dilute it to a 5% solution
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
10*.15=.05(X+10)
1.5=.05X+.5
.05X=1.5-.5
.05X=1
X=1/.05
X=20 LITERS OF WATER WITH 0% ALCOHOL MUST BE ADDED.
PROOF
(10*.15)+20*0=30*.05
1.5=1.5