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put this solution on YOUR website!How much water must be added to a 40 liters of a 30% salt solution to produce a 25% salt solution?
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Let x = amount of water added
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Started with:
40 liters
of which .30(40) = 12 liters is salt
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12 = .25(40+x)
12 = 10 + .25x
2 = .25x
8 liters = x
