SOLUTION: how many gallons of 50% antifreeze solution must be mixed with 70 gallons of 30% antifreeze to get a mixture that is 40% antifreeze? use the six-step method.

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Question 886817: how many gallons of 50% antifreeze solution must be mixed with 70 gallons of 30% antifreeze to get a mixture that is 40% antifreeze? use the six-step method.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
40 is the average of 50 & 30, so it's equal parts.