Out of 50 teachers of a school, one teacher retires and in place of him a new teacher 35 years old joins. As a result of it average age of the teachers reduces by 0.2 years. Age of the retired teacher is :
Answer & explanation
Correct answer: option 2
Age of new teacher = 35 years
Total age decreased = 50 ×0.2 = 10 years.
∴ Age of the retired teacher = Age of new teacher + Total age decreased
Age of the retired teacher = 35 + 10 = 45 years