SOLUTION: How much water must be boiled away to increase the concentration of 300 gallons of a salt solution from 2%-3%?

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Question 262871: How much water must be boiled away to increase the concentration of 300 gallons of a salt solution from 2%-3%?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
How much water must be boiled away to increase the concentration of 300 gallons of a salt solution from 2%-3%?
:
Let x = amt of water that has to boil away
.02(300) = .03(300-x)
6 = 9 -.03x
.03x = 9 - 6
.03x = 3
x = 3%2F.03
x = 100 gallons