The Avg age of a class of 22 subject areas in 21 years.
The Avg age of a class of 22 subject areas in 21 years. The avg increased by one when the lecturer’s age also involved. What is the age of the Lecturer?
Answer/Solution
44 years
Steps/Work
E
44 years
Average * Subject Areas = Total Age
So => 21 years x 22 numbers = 462 years … (1)
=> 22 years x 23 numbers = 506 years … (2)
Therefore Lecturer’s age = Eqn(2) – Eqn(1)
= 506 – 462
= 44 Years.
44 years
Average * Subject Areas = Total Age
So => 21 years x 22 numbers = 462 years … (1)
=> 22 years x 23 numbers = 506 years … (2)
Therefore Lecturer’s age = Eqn(2) – Eqn(1)
= 506 – 462
= 44 Years.