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QUESTION
A chemical company makes two brands of antifreeze. The first brand is 30% pure antifreeze, and the second brand is 55% pure antifreeze. In order to obtain 150 gallons of a mixture that contains 45
A chemical company makes two brands of antifreeze. The first brand is
30%
pure antifreeze, and the second brand is
55%
pure antifreeze. In order to obtain
150
gallons of a mixture that contains
45%
pure antifreeze, how many gallons of each brand of antifreeze must be used?
