Question
PSLE
Wendy has a number of notebooks in three colours: brown, blue and orange. 15 of the notebooks are brown. The number of brown notebooks is thrice the number of blue notebooks. What fraction of the notebooks is orange?
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PSLE
Wendy has a number of notebooks in three colours: brown, blue and orange. 15 of the notebooks are brown. The number of brown notebooks is thrice the number of blue notebooks. What fraction of the notebooks is orange?