Question
PSLE
A bag contains erasers of three different colours. 17 of the erasers are purple. The ratio of the number of green erasers to that of blue erasers is 6 : 1. What is the ratio of the number of purple erasers to that of blue erasers?
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PSLE
A bag contains erasers of three different colours. 17 of the erasers are purple. The ratio of the number of green erasers to that of blue erasers is 6 : 1. What is the ratio of the number of purple erasers to that of blue erasers?