The following are the ages (years) of 5 people in a room: 14 , 24 , 24 , 20 , 24 A person enters the room. The mean age of the 6 people is now 21. What is the age of the person who entered the room?

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asked Oct 11, 2023 163k views

19 votes

The following are the ages (years) of 5 people in a room:

14
,

24
,

24
,

20
,

24

A person enters the room.
The mean age of the 6 people is now 21.
What is the age of the person who entered the room?

Mathematics
high-school

Mbouzahir asked

by Mbouzahir

8.8k points

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1 Answer

7 votes

Answer:

Explanation:

$(14 + 20 + 24 + 24 + 24 + x) / 6 = 21 \\ 106 + x = 126 \\ x = 126 - 106 = 20$

Huron answered Oct 16, 2023

by Huron

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