SOLUTION: A chemical company makes two brands of antifreeze. The first brand is 70% pure antifreeze, and the second brand is 95% pure antifreeze. In order to obtain 50 gallons of a mixture

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: A chemical company makes two brands of antifreeze. The first brand is 70% pure antifreeze, and the second brand is 95% pure antifreeze. In order to obtain 50 gallons of a mixture       Log On


   

Question 1189833: A chemical company makes two brands of antifreeze. The first brand is 70% pure antifreeze, and the second brand is 95% pure antifreeze. In order to obtain 50
gallons of a mixture that contains 75% pure antifreeze, how many gallons of each brand of antifreeze must be used?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
50 gallons solution mixture wanted
v gallons of the 95%
50-v gallons of the 70%

95v%2B70%2850-v%29=75%2A50
Solve this for v, and save all computation for last.
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