SOLUTION: How many quarts of water must be added to 6 qt of an 80% antifreeze solution to make a 60% antifreeze solution?

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Question 793651: How many quarts of water must be added to 6 qt of an 80% antifreeze solution to make a 60% antifreeze solution?
Answer by harpazo(655) About Me  (Show Source):
You can put this solution on YOUR website!

Let q = quarts
q + 6(0.80) = 0.60(q+6)

You take it from here.