Is it a b c or d!???????????????ksnsnsksnsjsksbdnsnddjdi
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
Hello,
as the mean age of 5 people is 40
it means that the sum of the 5 ages is 40*5=200
now a person enters the room, let's note x his age
the new mean is
So the age of the new person is 16
hope this helps