SOLUTION: A radiator holds 6 liters. how much of the 20% antifreeze solution should be drained & replaced with pure antifreeze to bring the solution up to 50% antifreeze?
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Question 280418: A radiator holds 6 liters. how much of the 20% antifreeze solution should be drained & replaced with pure antifreeze to bring the solution up to 50% antifreeze? Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! .2x+y=6*.5
x+y=6
x=3.75 and y=2.25
drain 2.25 liters and replace it with 2.25 liters of 100% antifreeze.
