Question
PSLE
Tammy has a number of pens in three colours: red, green and brown. 57 of the pens are red. The number of red pens is thrice the number of green pens. What fraction of the pens is brown?
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PSLE
Tammy has a number of pens in three colours: red, green and brown. 57 of the pens are red. The number of red pens is thrice the number of green pens. What fraction of the pens is brown?