SOLUTION: A chemical company mixes pure water with their premium antifreeze solution to create an inexpensive antifreeze mixture. The premium antifreeze solution contains 85% pure antifreez

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Question 1189919: A chemical company mixes pure water with their premium antifreeze solution to create an inexpensive antifreeze mixture. The premium antifreeze solution contains 85% pure antifreeze. The company wants to obtain 255 gallons of a mixture that contains 30% pure antifreeze. How many gallons of water and how many gallons of the premium antifreeze solution must be mixed?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Dilution - just adding water

%2885%2Av%29%2F180=30

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85v=180%2A30
v=%28180%2A30%29%2F85
v=63.53--------------antifreeze
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116.47-------------of water


quick check
%2885%2A63.5%29%2F%28116.5%2B63.5%29=30