Question
PSLE
Sabrina has a number of staplers in three colours: orange, purple and yellow. 13 of the staplers are orange. The number of orange staplers is thrice the number of purple staplers. What fraction of the staplers is yellow?
2 m

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PSLE
Sabrina has a number of staplers in three colours: orange, purple and yellow. 13 of the staplers are orange. The number of orange staplers is thrice the number of purple staplers. What fraction of the staplers is yellow?