Mathematics, 09.08.2021 03:50 zitterkoph

A chemical company makes two brands of antifreeze. The first brand is 65% pure antifreeze, and the second brand is 90% pure antifreeze. In order to obtain 30 gallons of a mixture that contains 80% pure antifreeze, how many gallons of each brand of antifreeze must be used?

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A chemical company makes two brands of antifreeze. The first brand is 65% pure antifreeze, and the s...

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