Question
PSLE
Erika has a number of pens in three colours: blue, yellow and brown. 23 of the pens are blue. The number of blue pens is four times the number of yellow pens. What fraction of the pens is brown?
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PSLE
Erika has a number of pens in three colours: blue, yellow and brown. 23 of the pens are blue. The number of blue pens is four times the number of yellow pens. What fraction of the pens is brown?