The average age of 28 students in a class is 15 If the teacher rsquo s age is included the average i...........

The average age of 28 students in a class is 15. If the teacher’s age is included, the average increases by one. The age of the teacher is :

This questions was previously asked in

RRB Clerk Prelims (19 Aug, 2023 Shift 1)

25 years

30 years

44 years

40 years

46 years

- The average age of 28 students is 15 years, so their total age is 28 × 15 = 420 years.

- When the teacher is added, the total number of people becomes 29.

- The new average age is 16 years when the teacher is included.

- Thus, the total age for 29 people is 29 × 16 = 464 years.

- The teacher’s age is the difference in total age: 464 - 420 = 44 years.

- Options provided were:

- Option 1: 25 years

- Option 2: 30 years

- Option 3: 44 years

- Option 4: 40 years

- Option 5: 46 years

- The correct answer is Option 3: 44 years.

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