SOLUTION: How many gallons of a 2% salt solution must be mixed with 20 gallons of a 7% solution to obtain a 4% solution?
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Question 345769: How many gallons of a 2% salt solution must be mixed with 20 gallons of a 7% solution to obtain a 4% solution?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let be the amount of 2% salt solution.
gallons
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