Question
PSLE
Usha has a number of pens in three colours: blue, green and brown. 511 of the pens are blue. The number of blue pens is twice the number of green pens. What fraction of the pens is brown?
2 m

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PSLE
Usha has a number of pens in three colours: blue, green and brown. 511 of the pens are blue. The number of blue pens is twice the number of green pens. What fraction of the pens is brown?