Question

The following are the ages (years) of 5 people in a room:

14
,


22
,


14
,


13
,


18


A person enters the room.
The mean age of the 6 people is now 15.
What is the age of the person who entered the room?

Answer 1

Sum of Age of first 5 people = 81
Sum of Age for 6 people = 15 x 6 = 90

Age of the 6th person who entered the room = 90 - 81 = 9