The mean age of 5 people in a room is 39 years.
A person enters the room.
The mean age is...
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Mathematics, 21.04.2021 14:00, alisharodriguez1
The mean age of 5 people in a room is 39 years.
A person enters the room.
The mean age is now 40.
What is the age of the person who entered the room?
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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