SOLUTION: How many gallons of a 10% salt solution must be mixed with 20 gallons of a 25% salt solution to produce a 20% salt solution?
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Question 24813: How many gallons of a 10% salt solution must be mixed with 20 gallons of a 25% salt solution to produce a 20% salt solution?
Answer by Paul(988) (Show Source): You can put this solution on YOUR website!
10x+25(20)= 20(x+20)
10x+500=20x+400 --> simplify
-10x=-100
x=10
Hence about 10 gallons of 10% solution must be added.
Paul.
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