Question
PSLE
Diana has a number of notebooks in three colours: brown, red and orange. 13 of the notebooks are brown. The number of brown notebooks is four times the number of red notebooks. What fraction of the notebooks is orange?
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PSLE
Diana has a number of notebooks in three colours: brown, red and orange. 13 of the notebooks are brown. The number of brown notebooks is four times the number of red notebooks. What fraction of the notebooks is orange?