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

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Solution

The average age of 8 teachers was increased by 2 years means there was an increase of 8 x 2 = 16 years in the total age.

So instead of the teacher if age 35, a teacher of age 35 +16 =51 came.

Age of newly joined teacher = 51

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Similar questions

Q. The table given below shows the ages of 75 teachers in a school.

Age (in years)	18−29	30−39	40−49	50−59
No. of teachers	5	25	35	10

Here 18−29 means from 18 to 29, including both.
A teacher from the school is chosen at random. What is the probability that the teacher chosen is
(i) 40 or more than 40 years old?
(ii) 49 or less than 49 years old?
(iii) 60 or more than 60 years old?

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

The average age of 8 teachers was increased by 2 years means there was an increase of 8 x 2 = 16 years in the total age. So instead of the teacher if age 35, a teacher of age 35 +16 =51 came. Age of newly joined teacher = 51

The average age of 8 teachers was increased by 2 years means there was an increase of 8 x 2 = 16 years in the total age.

So instead of the teacher if age 35, a teacher of age 35 +16 =51 came.

Age of newly joined teacher = 51