SOLUTION: How many gallons of 50% antifreeze solution must be mixed with 100 gallons of 20% antifreeze solution to get 40% antifreeze solution?

SOLUTION: How many gallons of 50% antifreeze solution must be mixed with 100 gallons of 20% antifreeze solution to get 40% antifreeze solution?

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Question 380379: How many gallons of 50% antifreeze solution must be mixed with 100 gallons of 20% antifreeze solution to get 40% antifreeze solution?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let A be the amount of 50% solution.

gallons

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