SOLUTION: How much water should I evaporate from 10 liters of 3% salt solution if I want a solution containing 5% salt?

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Question 571269: How much water should I evaporate from 10 liters of 3% salt solution if I want a solution containing 5% salt?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
(3%)(10) = (5%)(10 - x)