SOLUTION: How much pure water must be mixed with 5 pints of 60% developer to produce a mixture that is 28% developer?

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: How much pure water must be mixed with 5 pints of 60% developer to produce a mixture that is 28% developer?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 267703: How much pure water must be mixed with 5 pints of 60% developer to produce a mixture that is 28% developer?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
How much pure water must be mixed with 5 pints of 60% developer to produce a mixture that is 28% developer?
:
Let x = amt of water required
:
.6(5) = .28(x+5)
3 = .28x + 1.4
3 - 1.4 = .28x
1.6 = .28x
x = 1.6%2F.28
x = 5.7 pints of water
:
:
Check solution
.6(5) = .28(10.7)
3 = 3.0