A chemical company makes two brands of antifreeze. The first brand is 2 0 % pure antifreeze, and the second brand is 7 0 %
A chemical company makes two brands of antifreeze. The first brand is pure antifreeze, and the second brand is pure antifreeze. In order to obtain gallons of a mixture that contains pure antifreeze, how many gallons of each brand of antifreeze must be used?
