2014 · Q10
The average age of male employees in a firm is 52 years and that of female employees is 42 years. The mean age of all employees is 50 years. The percentage of male and female employees are respectively
Elementary MathematicsArithmetic
- A80% and 20%
- B20% and 80%
- C50% and 50%
- D52% and 48%
Explanation
By alligation, male:female = (50-42):(52-50) = 8:2, i.e. 80% and 20%.