SOLUTION: If you can please show work, thank you so much: A 27 gallon solution contains 9 gallons of acid and 18 gallons of water. How much water should be added to get a solution that is 2

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Question 710934: If you can please show work, thank you so much:
A 27 gallon solution contains 9 gallons of acid and 18 gallons of water. How much water should be added to get a solution that is 25% acid?

Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
A 27 gallon solution contains 9 gallons of acid and 18 gallons of water. How much water should be added to get a solution that is 25% acid?
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let x=amt of water to add
amt of acid in original solution=amt of acid in final solution
1/3(27)=1/4(27+x)
9=27/4+x/4
x/4=9-27/4
x/4=36/4-27/4
x/4=9/4
x=9
amt of water to add=9 gal