Question 618609: how much 12% acid solution and pure water must be mixed to produce 19.2 gallons of a mixture that is 7% acid? Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! how much 12% acid solution and pure water must be mixed to produce 19.2 gallons of a mixture that is 7% acid?
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let x= gallons of pure water to be mixed
19.2-x= gallons of 12% solution to be mixed
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12%(19.2-x)+0%x=7%*19.2
2.304-.12x+0=1.344
.12x=.96
x=8
gallons of pure water to be mixed=8
gallons of 12% solution to be mixed=11.2
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