SOLUTION: How much water should be added to 4 liters of (pure) antifreeze to make a solution that is 60% antifreeze?

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Question 437660: How much water should be added to 4 liters of (pure) antifreeze to make a solution that is 60% antifreeze?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
0.00x + 1.00*4 = 0.60(x+4)
==> 4 = 0.60x + 2.4
==> 1.6 = 0.6x
==> x = 8/3, or 2%262%2F3 liters of water.