Question 553942: how many gallons of a 50% antifreeze solution must be mixed with 90 gallons of 25% antifreeze to get a mixture of 40% antifreeze Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = gallons of 50% antifreeze needed = gallons of antifreeze in 50% solution
given: = gallons of antifreeze in 90% solution
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135 gallons of 50% antifreeze are needed
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