Mathematics, 15.10.2019 07:30 kony345p

Achemical company makes two brands of antifreeze. the first brand is 45% pure antifreeze, and the second brand is 95% pure antifreeze. in order to obtain 90 gallons of a mixture that contains 60% pure antifreeze, how many gallons of each brand of antifreeze must be used?

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Achemical company makes two brands of antifreeze. the first brand is 45% pure antifreeze, and the se...