Question
PSLE
Jen has a number of pens in three colours: green, purple and yellow. 13 of the pens are green. The number of green pens is thrice the number of purple pens. What fraction of the pens is yellow?
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PSLE
Jen has a number of pens in three colours: green, purple and yellow. 13 of the pens are green. The number of green pens is thrice the number of purple pens. What fraction of the pens is yellow?