SOLUTION: In order to conduct an experiment just right, a researcher at a pharmaceutical company called weird growth needs 100 gallons of a special 49% acidic solution. He already has acidic

Question 278913: In order to conduct an experiment just right, a researcher at a pharmaceutical company called weird growth needs 100 gallons of a special 49% acidic solution. He already has acidic solutions of 25%, 40%, and 100% because the researcher wants keep cost down, he wants to use six times as much 25% solution as 40% solution. How much of each solution will he need to come up with 100 gallons of his 49% solution?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
let
x=25% solution
y=40% solution and
z=100% solution
x+y+z=100
6y=x
.25x+.40y+z=100*.49
x=60 y=10 and z=30 gallons

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