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Mathematics, 02.07.2020 15:01 maxout67

The mean age of 5 people in a room is 40 years. A person enters the room. The mean age is now 36. What is the age of the person who entered the room?

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The mean age of 5 people in a room is 40 years. A person enters the room. The mean age is now 36. Wh...

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