Question

A chemical company makes two brands of antifreeze. The first brand is 55% pure antifreeze, and the second brand is 80% pure antifreeze. In order to obtain 180 gallons of a mixture that contains 65% pure antifreeze, how many gallons of each brand of antifreeze must be used?​

Answer 1

y = 116

x = 64

Explanation:

.55x + .80y =.8* 160

x + y = 180

~~~~~~~~~~~~~~~~~~~~

x = 180-y