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Mathematics, 21.01.2021 14:00 yeld

The following are the ages (years) of 5 people in a room: 20, 13, 14, 21, 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

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The following are the ages (years) of 5 people in a room: 20, 13, 14, 21, 18
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