The average age of 24 students in a class is 15 years When the teacher 39 s age is included the aver...........

Quantitative Aptitude (MTS) Average

The average age of 24 students in a class is 15 years. When the teacher's age is included, the average increases by 1.

What is the teacher's age (in years)?

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SSC MTS 6th July 2022 Shift-3

- The average age of 24 students is 15 years.

- Total age of the students is 24 * 15 = 360 years.

- When the teacher's age is included, the number of people becomes 25.

- The new average is 16 years (since it increases by 1).

- Total age including teacher is 25 * 16 = 400 years.

- Teacher's age = 400 - 360 = 40 years.

- Option 4: 40 is indeed the correct answer.

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