Question

The mean age of 6 women in an office is 21 years old. The mean age of 7 men in an office is 22 years old. What is the mean age (nearest year) of all the people in the office?

Answer 1

sum of female ages = 21*6 = 126

sum of male ages = 22*7=154

he average age (nearest year) of everyone in the office?

(126+154)/13=21.5383= 21 years