SOLUTION: How much pure salt must be added to to 25 grams of a 12% salt solution to make it a 20% solution. I am having a very hard time trying to figure this problem out. Thanks for your

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Question 27219: How much pure salt must be added to to 25 grams of a 12% salt solution to make it a 20% solution. I am having a very hard time trying to figure this problem out. Thanks for your help.
Dennis
Found 3 solutions by Paul, MathTherapy, josgarithmetic:
Answer by Paul(988)   (Show Source):
You can put this solution on YOUR website!
25(12)=20(x+25)
300=20x+500
20x=200
x=10

Hence, about 10grams is needed.
Paul.

Answer by MathTherapy(10719)   (Show Source):
You can put this solution on YOUR website!

How much pure salt must be added to to 25 grams of a 12% salt solution to make it a 20% solution. I am having a very hard time trying to figure this problem out. Thanks for your help. Dennis With amount of pure salt being S, equation is: .12(25) + S = .2(25 + S) Solving for S, amount of pure salt to be added = , or 2.5 grams. FYI: The answer is NOT 10 grams, as the other person who responded, states!

Answer by josgarithmetic(39733)   (Show Source):
You can put this solution on YOUR website!
x amount of pure salt to add

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