Find out The Age of The Principal.

In a school, the average age of 22 teachers is 27 years. If the age of the principal is also added to the sum of ages of the teachers, then the average age is increased by 1 year. Find out the age of the principal.

  1. 49 years
  2. 27 years
  3. 28 years
  4. 50 years
Nitin Baudh Learner Asked on 7th September 2015 in Maths.
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1 Answer(s)

Answer: (4) 50 years

Explanation:-
The average age of 22 teachers = 27 years
Then, the sum of the age of 22 teachers = 27 x 22
= 594 years

If the age of principal is also added,
Then, the average age is increased by 1 year.
Therefore, the average gage of 23 candidates = 27 + 1 = 28 years
The sum of their ages = 23 x 28 = 644 years

Then, the age of the principal = 644 – 594 = 50 years.

Hence, the answer is (4) 50 years.

Anurag Mishra Professor Answered on 9th September 2015.
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