SOLUTION: Question:An attendant removes a certain amount of 20% antifreeze and replaces the same amount with 80% antifreeze to form 15qts of 60% antifreeze. Request: Can you show me and

Question 498964: Question:An attendant removes a certain amount of 20% antifreeze and replaces the same amount with 80% antifreeze to form 15qts of 60% antifreeze.
Request: Can you show me and explain the work for this problem
Answer by chessace(471) (Show Source): You can put this solution on YOUR website!
x=answer which I assume is "How much was replaced?"
Translate the story and Follow the stuff:
.2(15-x) AF there all the time (especially after removal),
+.8x AF added
=.6*15 at the end
3-.2x+.8x=9
.6x=6
x=10 qts

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