SOLUTION: A mechanic is working on a car with a 20-qt radiator containing a 60% antifreeze solution. HOw much of the solution should he drain and replace with pure water to get a solution t
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Question 123078: A mechanic is working on a car with a 20-qt radiator containing a 60% antifreeze solution. HOw much of the solution should he drain and replace with pure water to get a solution that is 50% antifreeze. Answer by checkley71(8403) (Show Source):
You can put this solution on YOUR website! .6(20-X)=.5*20
12-.6X=10
-.6X=10-12
-.6X=-2
X=-2/-.6
X=3.33 QT NEEDS TO BE DRAINED & REPLACED WITH PURE WATER.
PROOF
.6(20-3.33)=.5*20
.6*16.67=10
10=10
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