Question
The average age of a group of administrators and labourers is 55. If the average age of the administrators is 53 years and that of the labourers is 65 years, what is the ratio of the number of labourers to administrators?
2 m

Click button first when a symbol is required. X

The average age of a group of administrators and labourers is 55. If the average age of the administrators is 53 years and that of the labourers is 65 years, what is the ratio of the number of labourers to administrators?