Question
PSLE
Tina has a number of markers in three colours: green, red and yellow. 15 of the markers are green. The number of green markers is twice the number of red markers. What fraction of the markers is yellow?
2 m

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PSLE
Tina has a number of markers in three colours: green, red and yellow. 15 of the markers are green. The number of green markers is twice the number of red markers. What fraction of the markers is yellow?