SOLUTION: A Chemist wants to make a 10% solution of fertilizer. How much water and how much of a 30% soltution should the chemist mix to get 30 L of a 10% solution?

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Question 976880: A Chemist wants to make a 10% solution of fertilizer. How much water and how much of a 30% soltution should the chemist mix to get 30 L of a 10% solution?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.30x=.10(30)
.30x=3
3x=30
x=10 L of .30 solution
x+y=30
y=20 L water