Question
The average age of a group of labourers and security guards is 43. If the average age of the labourers is 40 years and that of the security guards is 52 years, what is the ratio of the number of security guards to labourers?
2 m

Click button first when a symbol is required. X

The average age of a group of labourers and security guards is 43. If the average age of the labourers is 40 years and that of the security guards is 52 years, what is the ratio of the number of security guards to labourers?