Answered

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

12
,


21
,


25
,


18
,


13


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?

Sagot :

22englandc

Answer:

the age of the person that entered the room is 37

Step-by-step explanation:

[tex]m=\frac{sum of terms}{number of terms}[/tex]

[tex]\frac{x}{6} =21\\[/tex]

x=126

12+21+25+18+13=89

126-89=37

Answer:

Step-by-step explanation:

(12 + 21 + 25 + 18 + 13 + n) / 6 = 21

    (12 + 21 + 25 + 18 + 13 + n) = 126

                                             n = 126 - 12 - 21 - 25 - 18 - 13

                                             n = 37

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