Question
PSLE
A bag contains coins of three different colours. 13 of the coins are yellow. The ratio of the number of red coins to that of orange coins is 2 : 7. What is the ratio of the number of yellow coins to that of orange coins?
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PSLE
A bag contains coins of three different colours. 13 of the coins are yellow. The ratio of the number of red coins to that of orange coins is 2 : 7. What is the ratio of the number of yellow coins to that of orange coins?