SOLUTION: How many liters of water must be added to 50L of a 30% acid solution in order to produce a 20% acid solution?

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Question 389326: How many liters of water must be added to 50L of a 30% acid solution in order to produce a 20% acid solution?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
(0.30)(50) + (0.00)(x) = 0.20(50+x);
15 = 10 + 0.20x;
5 = 0.20x;
x = 25, the # liters of water that must be added to the original solution.