SOLUTION: how many gallons of a 90​% antifreeze solution must be mixed with 90 gallons of 15​% antifreeze to get a mixture that is 80​% ​antifreeze?
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Question 1108119: how many gallons of a 90% antifreeze solution must be mixed with 90 gallons of 15% antifreeze to get a mixture that is 80% antifreeze? Answer by josgarithmetic(39618) (Show Source):
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