Question

There are 8 teachers in a school. When a 35 year old teacher was transferred and another teacher joined, the average age ws increased by 2 years. How old the new teacher?​

Answer 1

There are 8 teachers.

Let the total age be A.

Then avg age = A/8.

the average age was increased by 2 years means whosoever has come is of greater age than who has left.

New average = A/8 + 2

Increment in total age = 8 x 2 = 16.

New teacher's age = 35 + 16 = 51.