Question

The following are the ages (years) of 5 people in a room: 25, 25, 25, 24, 18 A person enters the room. The mean age of the 6 people is now 22. What is the age of the person who entered the room?

Answer 1

Answer:

20 years.

Step-by-step explanation:

Sum of ages of 5 persons= 117.

Mean after six persons=22

So total sum of ages after his entrance=6×22=132.

So age of 6th person=132-117=15.