SOLUTION: A chemical company mixes pure water with their premium antifreeze solution to create an inexpensive antifreeze mixture. The premium antifreeze solution contains 80 % pure ant

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Question 1159881: A chemical company mixes pure water with their premium antifreeze solution to create an inexpensive antifreeze mixture. The premium antifreeze solution contains
80
%
pure antifreeze. The company wants to obtain
320
gallons of a mixture that contains
55
%
pure antifreeze. How many gallons of water and how many gallons of the premium antifreeze solution must be mixed?

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
premium is 0.8x where x is the total volume of premium
want 320 gallons of 0.55 (55%), or 176 gallons of pure antifreeze
.8x=176
x=220 gallons of premium antifreeze
320-220=100 gallons of water