Question

The following are the ages (years) of 5 people in a room: 12, 19, 24, 21, 21 A person enters the room. The mean age of the 6 people is now 25. What is the age of the person who entered the room?

Answer 1

53

Explanation:

Answer 2

53

Explanation:

x - the age of the person who entered the room.

(12 + 19 + 24 + 21 + 21 + x)/6 = 25

12 + 19 + 24 + 21 + 21 + x = 150

97 + x = 150

x = 53