The mean age of 5 people in a room is 40 years. A person enters the room. The mean age is now 39. What is the age of the person who entered

Question

The mean age of 5 people in a room is 40 years. A person enters the room. The mean age is now 39. What is the age of the person who entered the room?

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Mộc Miên 6 months 2021-07-20T20:25:50+00:00 1 Answers 0 views 0

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  1. diemkieu
    0
    2021-07-20T20:27:43+00:00
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    Answer:

    10 years old 🙂

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