BD Merit - Freelancing, BCS, Bank, Primary, Admission, NTRCA

1 . The average are of a group of 15 employing is 24 years, If 5 more employees join the group., the average age increases by 2 years. Find the average age of the new employ?

A. 35
B. 30
C. 24
D. 32

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Answer: Option D

Explanation:

The average age of a group of 15 employees is 24 years.
Therefore, the sum of the ages of all 15 of them = 15 * 24 = 360
When 5 more employees join the group, the average age increases by 2 years. New average = 26.
Now, there are 20 employees.
Therefore, the sum of the ages of all 20 of them = 20x26 = 520
Therefore, the sum of the ages of the 5 new students who joined = 520 - 360 = 160
And the average age of each of the 5 new students = 160/5 = 32 years.

Senior Officer- 8 Bank Recruitment Test 31-08-2018

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