Answer:he age of the person who entered the room = 27 years
Step-by-step explanation:
Step 1
Mean Age = total of the ages of observation / numbers of people with the ages
Step 2
Let the sixth person's age be represented as x
such that the mean ages of the 6 people inside the room be given as
Mean =Total ages of 6 people / 6
20 = Total ages of 6 people / 6
(16+25+23+12+17+ x) / 6 = 20
93+ x / 6 = 20
93+ x= 6 x 20
93+ x= 120
x= 120 - 93
x=27
the age of the person who entered the room = 27 years
