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
Answer by Paul(988) About Me  (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.