2013 · Q78
There are 45 male and 15 female employees in an office. If the mean salary of the 60 employees is Rs. 4,800 and the mean salary of the male employees is Rs. 5,000, then the mean salary of the female employees is
Elementary MathematicsStatistics
- A4,200
- B4,500
- C5,600
- D6,000
Explanation
(60×4800−45×5000)/15=4200. Answer A.