Question
Download Solution PDFThe average age of 59 students of a class is 22 years. If the age of the teacher is also included, the average age of the whole group becomes 23 years. The age (in years) of the teacher is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Average age of 59 students = 22 years
Total number of individuals after including teacher = 60
New average age = 23 years
Formula used:
Total age = Average × Number of individuals
Age of teacher = Total age after including teacher - Total age of students
Calculations:
Total age of 59 students = 22 × 59
⇒ Total age of 59 students = 1298
Total age of 60 individuals = 23 × 60
⇒ Total age of 60 individuals = 1380
Age of teacher = 1380 - 1298
⇒ Age of teacher = 82
∴ The correct answer is option (2).
Last updated on Jul 8, 2025
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