An artist mixes blue and yellow to make a shade of green. The ratio of blue to yellow is four to one. The color blue makes up what fraction of the mixture?
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Hello! The ratio is 4:1, meaning that there are 4 blues for 1 yellow. 4 + 1 is 5. There are 5 parts of paint. This also means that 4 out of 5 of the mixture is blue. The color blue makes up 4/5 of the mixture.
