SOLUTION: How many gallons of a 10% salt solution must be mixed with 20 gallons of a 25% salt solution to produce a 20% salt solution?

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: How many gallons of a 10% salt solution must be mixed with 20 gallons of a 25% salt solution to produce a 20% salt solution?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 24813: How many gallons of a 10% salt solution must be mixed with 20 gallons of a 25% salt solution to produce a 20% salt solution?
Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
10x+25(20)= 20(x+20)
10x+500=20x+400 --> simplify
-10x=-100
x=10

Hence about 10 gallons of 10% solution must be added.
Paul.