Question
PSLE
Raeann has a number of notebooks in three colours: green, red and brown. 13 of the notebooks are green. The number of green notebooks is thrice the number of red notebooks. What fraction of the notebooks is brown?
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PSLE
Raeann has a number of notebooks in three colours: green, red and brown. 13 of the notebooks are green. The number of green notebooks is thrice the number of red notebooks. What fraction of the notebooks is brown?