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6 October, 03:04

The mean age of 5 people in a room is 28 years.

A person enters the room.

The mean age is now 29.

What is the age of the person who entered the room?

...

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Answers (1)
  1. 6 October, 04:29
    0
    174

    Step-by-step explanation:

    You should look at the mean and do this:

    5*28 so now you know all the ages which is 140 now you do 140/29 and you get 4.8 ... so you can see that the answer is 174
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