Question : The average age of 29 students in a class is 26 years. If the age of the teacher is also included, the average age of the class becomes 26.4 years. Find the age of the teacher.
Option 1: 36 years
Option 2: 38 years
Option 3: 42 years
Option 4: 32 years
Correct Answer: 38 years
Solution :
The average age of 29 students = 26 years
Sum of the ages of 29 students = 26 × 29 = 754
The average age of 29 students and a teacher = 26.4 years
Sum of the ages of 29 students and 1 teacher = 26.4 × 30 = 792
The age of the teacher = 792 – 754 = 38
Hence, the correct answer is 38 years.
Related Questions
Know More about
Staff Selection Commission Multi Tasking ...
Answer Key | Cutoff | Selection Process | Preparation Tips | Eligibility | Application | Exam Pattern
Get Updates Brochure
Your Staff Selection Commission Multi Tasking Staff Exam brochure has been successfully mailed to your registered email id “”.
