Question
PSLE
A bag contains stickers of three different colours. 13 of the stickers are purple. The ratio of the number of yellow stickers to that of blue stickers is 1 : 2. What is the ratio of the number of purple stickers to that of blue stickers?
2 m

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PSLE
A bag contains stickers of three different colours. 13 of the stickers are purple. The ratio of the number of yellow stickers to that of blue stickers is 1 : 2. What is the ratio of the number of purple stickers to that of blue stickers?