Question
PSLE
Opal has a number of files in three colours: brown, orange and red. 27 of the files are brown. The number of brown files is thrice the number of orange files. What fraction of the files is red?
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PSLE
Opal has a number of files in three colours: brown, orange and red. 27 of the files are brown. The number of brown files is thrice the number of orange files. What fraction of the files is red?