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

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Question 129103This question is from textbook Prentice Hall Mathematics
: A chemist wants to make 10% solution of fertilizer. How much water and how much of a 30% solution should the chemist mix to get 30 L of a 10% solution? This question is from textbook Prentice Hall Mathematics

Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let x="liters of water", so 30-x="liters of 30%"

you don't add or take away fertilizer, so volume times concentration is the same on both sides of the equation

x(0%)+(30-x)(30%)=30(10%) __ 0+9-.3x=3 __ -.3x=-6