SOLUTION: How much water must be evaporated from 32 ounces of a 4% salt solution to make a 6% salt solution?

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Question 264826: How much water must be evaporated from 32 ounces of a 4% salt solution to make a 6% salt solution?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
How much water must be evaporated from 32 ounces of a 4% salt solution to make a 6% salt solution?
:
Let x = amt of water required to be evaporated
;
Really a simple equation
.04(32) = .06(32-x)
1.28 = 1.92 - .06x
+.06x = 1.92 - 1.28
.06x = .64
x = .64%2F.06
x = 102%2F3 oz to be evaporated
:
:
Check solution
.04(32) = .06(32-10.67)
1.28 = .06(21.33)
1.28 = 1.28, note the amt of salt stays the same, only the amt of water changes