Question

The following are the ages (years) of 5 people in a room:
13, 25, 15, 15, 17
A person enters the room.
The mean age of the 6 people is now 22.
What is the age of the person who entered the room?

Answer 1

Answer:

age of the who entered the room is 47

Step-by-step explanation:

ages of 5 people in the room = 13,25,15,15,17

Mean of these 6 peoples is -

Mean=sum of the obsv./ number of obsv.

so,

mean of the 6 peoples were 22

let  the value of the 6th number be x

Hence ,

mean = 13+25+15+15+17+x/ 6

22= 85+x/6

22×6 = 85+x

132= 85+x

x= 47

Answer 2

Step-by-step explanation:

LET AGE OF 6TH PEOPLE=X

MEAN OF 6 PEOPLES= 13+25+15+15+17+X

6

22 = 85+X

6

22× 6 = 85+X

132 = 85+X

132-85 = X

47 = X

AGE OF 6TH PEOPLE IS 47 yrs

PLEASE MARK ME AS BRAINLIST