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Multiple Choice Questions

10 year ago the average of all the 25 employees in an IT company was 45 years 4 years ago the MD of ...........

Quantitative Aptitude (RAS) Average

10 year ago the average of all the 25 employees in an IT company was 45 years. 4 years ago, the MD of the company retired from the post at the age of 60 years. so after one year a new MD whose age was 54 years recruited from outside. the present average age of all the employees is, if MD is also considered as a employee:

54yrs

55yrs

54 18/25yrs

56 12/19yrs

Explanation:

Solution:
10yrs ago , the average age of 25 employees=45.
The present average age of all the employees=45+10=55
Total age of all the employees =25*55=1375
From the present age after 1 yrs the MD is appointed.then at present the age of MD is 53(54-1).
MD age difference is 60-53=7
The actual total age of all employees =1375-7=1368.
Then required average=1368/25=54 18/25

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