Question
PSLE
Shiyun has a number of staplers in three colours: yellow, brown and purple. 57 of the staplers are yellow. The number of yellow staplers is thrice the number of brown staplers. What fraction of the staplers is purple?
2 m

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PSLE
Shiyun has a number of staplers in three colours: yellow, brown and purple. 57 of the staplers are yellow. The number of yellow staplers is thrice the number of brown staplers. What fraction of the staplers is purple?