Question
PSLE
A bag contains coins of three different colours. 18 of the coins are orange. The ratio of the number of green coins to that of blue coins is 3 : 1. What is the ratio of the number of green coins to that of orange coins?
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PSLE
A bag contains coins of three different colours. 18 of the coins are orange. The ratio of the number of green coins to that of blue coins is 3 : 1. What is the ratio of the number of green coins to that of orange coins?