Question
PSLE
Erika has a number of pens in three colours: purple, brown and red. 18 of the pens are purple. The number of purple pens is twice the number of brown pens. What fraction of the pens is red?
2 m

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PSLE
Erika has a number of pens in three colours: purple, brown and red. 18 of the pens are purple. The number of purple pens is twice the number of brown pens. What fraction of the pens is red?