Question
The average age of a group of labourers and teachers is 42. If the average age of the labourers is 40 years and that of the teachers is 48 years, what is the ratio of the number of teachers to labourers?
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The average age of a group of labourers and teachers is 42. If the average age of the labourers is 40 years and that of the teachers is 48 years, what is the ratio of the number of teachers to labourers?