The mean age of 5 people in a room is 40 years.
a person enters the room.
the mean age is...
Mathematics, 07.01.2020 00:31 ksawyer745
The mean age of 5 people in a room is 40 years.
a person enters the room.
the mean age is now 35.
what is the age of the person who entered the room?
Answers: 1
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