SOLUTION: How many ounces of pure salt must be added to 9oz of 5% salt solution to produce a 15% solution? (Pure salt is 100%.) Round your answer to the nearest hundredth of an oz}.

Question 954485: How many ounces of pure salt must be added to 9oz of 5% salt solution to produce a 15% solution? (Pure salt is 100%.) Round your answer to the nearest hundredth of an oz}.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
How many ounces of pure salt must be added to 9oz of 5% salt solution to produce a 15% solution?
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Equation::
salt + salt = salt
1*x + 0.05*9 = 0.15(x+9)
100x + 5*9 = 15x + 15*9
85x = 10*9
x = 1.06 ounces (amt. of pure salt to add)
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Cheers,
Stan H.
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