The average age of the 24 workers and their supervisor is 41 years. If the supervisor's age is excluded, the average reduces by 0.75 years. The age of the supervisor is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 59 years.
Total sum of ages including the supervisor = 41 × 25 = 1025
Total Sum of ages excluding the supervisor = 40.25 × 24 = 966
Supervisor's age 1025 - 966 = 59 years
Hence, the age of the supervisor is 59 years.