SOLUTION: A certain paint is to be mixed with 3 parts yellow to 2 parts blue. Twelve gallons of mixed paint are needed. How many gallons of blue must be used?

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Question 970580: A certain paint is to be mixed with 3 parts yellow to 2 parts blue. Twelve gallons of mixed paint are needed. How many gallons of blue must be used?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
The 3 parts and 2 parts makes 5 parts. Your 12 gallons of finished mixture is cut into denominations of 5 parts.

%283%2F5%29%2A12=36%2F5=highlight%28%287%261%2F5%29%2AgallonsYellow%29

%282%2F5%29%2A12=24%2F5=highlight%28%284%264%2F5%29%2AgallonsBlue%29