Question
PSLE
A bag contains erasers of three different colours. 13 of the erasers are green. The ratio of the number of yellow erasers to that of blue erasers is 1 : 9. What is the ratio of the number of yellow erasers to that of green erasers?
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PSLE
A bag contains erasers of three different colours. 13 of the erasers are green. The ratio of the number of yellow erasers to that of blue erasers is 1 : 9. What is the ratio of the number of yellow erasers to that of green erasers?