Question
PSLE
Cathy has a number of files in three colours: blue, yellow and purple. 512 of the files are blue. The number of blue files is four times the number of yellow files. What fraction of the files is purple?
2 m

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PSLE
Cathy has a number of files in three colours: blue, yellow and purple. 512 of the files are blue. The number of blue files is four times the number of yellow files. What fraction of the files is purple?