Question

The following are the ages (years) of 5 people in a room:
20, 21, 20, 21, 21
A person enters the room.
The mean age of the 6 people is now 20.
What is the age of the person who entered the room?

Answer 1

Step-by-step explanation:

The answer should be the person who enter is of age 17 years.

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Answer 2

Answer:

16.....j

Just take the 6 person age to be x and then.

Add all and divide by 6 equate it to 20