Question
PSLE
There are 21 tarts in a box. 6 of them are pistachio tarts while the rest are cashew ones. What is the ratio of the number of cashew tarts to that of pistachio tarts in the box?
1 m

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PSLE
There are 21 tarts in a box. 6 of them are pistachio tarts while the rest are cashew ones. What is the ratio of the number of cashew tarts to that of pistachio tarts in the box?