One Teacher Retires and in Place of him a New Teacher 25 years Old joins :

Out of 10 teachers of a school, one teacher retires and in place of him a new teacher 25 years old joins. As a result of it average age of the teachers reduces by 3 years. Age of the retired teacher (in years) is:

  1. 56
  2. 55
  3. 60
  4. 58
Anurag Mishra Professor Asked on 17th November 2015 in Maths.
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1 Answer(s)

Answer:  (2) 55

Explanation:-
The total numbers of teachers of a school = 10 

One teacher retires and in place of him a new teacher 25 years old joins.
Then, the average age of teachers reduces by 3 years.

Therefore, the age of retired teacher = 25 + 3 x 10 
 = 25 + 30
 = 55 years

Hence, the answer is (2) 55. 

Anurag Mishra Professor Answered on 17th November 2015.
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