SOLUTION: how much water should be added to 77 gallons of a 32% salt solution to get a 30% salt solution

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Question 393985: how much water should be added to 77 gallons of a 32% salt solution to get a 30% salt solution
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
0.00x + 0.32*77 = 0.30(x + 77)
==> 24.64 = 0.30x + 23.1
==> 1.54 = 0.30x
==> x = 77/15 gallons of water.