Mathematics, 23.01.2021 05:00, nails4life324

A chemical company makes two brands. The first brand is 40% pure antifreeze, and the second is 65% pure antifreeze. In order to obtain 60 obtain gallons of a mixture that contains 55% pure antifreeze, how many gallons of each brand must be used?

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A chemical company makes two brands. The first brand is 40% pure antifreeze, and the second is 65% p...