SOLUTION: How many ounces of pure water must be added to 80 oz of a 35% salt solution to make a solution that is 14% salt?

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Question 906232: How many ounces of pure water must be added to 80 oz of a 35% salt solution to make a solution
that is 14% salt?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Assuming percent is weight per weight and "oz" is 1%2F16 of a pound,

Let x = how many ounces of water to add;
80%2A35%2F%2880%2Bx%29=14
80%2A35=14%28x%2B80%29
14x%2B14%2A80=80%2A35
14x=80%2A35-80%2A14
14x=80%2835-14%29
14x=80%2A21
x=40%2A3
highlight%28x=120%29