Question
PSLE
Eva has a number of pens in three colours: purple, green and blue. 15 of the pens are purple. The number of purple pens is thrice the number of green pens. What fraction of the pens is blue?
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PSLE
Eva has a number of pens in three colours: purple, green and blue. 15 of the pens are purple. The number of purple pens is thrice the number of green pens. What fraction of the pens is blue?