The mean age of 5 people in a room is 25 years. A person enters the room. The mean age is now 27. What is the age of the person who entered the room?
Answers
Answered by
1
Answer:
37 year is right answer
Answered by
0
Answer:
31 years
Explanation:
Since 5 people have a mean age of 30, the sum of their ages is
5
⋅
30
=
150
. Adding one more person of age 36 to the group gives 6 people with sum of ages
150
+
36
=
186
. Now divide this by 6 to get the new mean for the group of 6 people:
186
6
=
31
years.
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