Question
PSLE
A bag contains coins of three different colours. 12 of the coins are brown. The ratio of the number of red coins to that of green coins is 1 : 4. What is the ratio of the number of red coins to that of brown coins?
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PSLE
A bag contains coins of three different colours. 12 of the coins are brown. The ratio of the number of red coins to that of green coins is 1 : 4. What is the ratio of the number of red coins to that of brown coins?