Question

The mean age of 10 women in an office is 31 years old. The mean age of 3 men in an office is 20 years old. What is the mean age (nearest year) of all the people in the office?

Answer 1

25.5

Explanation:

To find the mean of all the people, do 31 plus 20 divided by 2( category of 2 means) = 51/2 = 25.5

Hope this helps

Answer 2

Answer: 28 years

Explanation:

To combine the data for all the workers, multiply 31×10 the total ages of the women and 20× 3 for the total ages of the men.

Add 310+60= 370. Then divide by 13, the total number of workers. 370÷13=28.46. You can round to 28 years.