SOLUTION: How much water should be added to 1 gallon of pure antifreeze to obtain a solution that is 60% antifreeze?

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Question 199976This question is from textbook College Algebra
: How much water should be added to 1 gallon of pure antifreeze to obtain a solution that is 60% antifreeze? This question is from textbook College Algebra

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
How much water should be added to 1 gallon of pure antifreeze to obtain
a solution that is 60% antifreeze?
:
Let x = amt of water required to accomplish this
:
1.0(1) = .6(x+1)
1 = .6x + .6
1 - .6 = .6x
.4 = .6x
x = .4%2F.6
x = 2%2F3 gallon of water required
:
:
Check solution in the original equation (use .67 for 2/3 gal)
1 = .6(.67+1)
1 = .6(1.67)
1 = 1.00