Question
PSLE
There are 30 wafers in a box. 9 of them are butter wafers while the rest are chocolate ones. What is the ratio of the number of chocolate wafers to that of butter wafers in the box?
1 m

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PSLE
There are 30 wafers in a box. 9 of them are butter wafers while the rest are chocolate ones. What is the ratio of the number of chocolate wafers to that of butter wafers in the box?