Question

At a health club, 60% of the members are men and 40% of the members are women. The average age of the men is 32 years. The average age of the women is 28 years.

What is the average age of all the members of the health club?



Enter your answer as a decimal in the box.


_ years

Answer 1

The average age is 30.4.

Explanation:

Answer 2

60% of the members are men and average age of men is 32 years old.
⇒ 60% of the members are 32 years old.

40% of the members are women and the average age of women is 28 years old.
⇒ 40% of the members are 28 years old.

Average age = 0.6 x 32 + 0.4 x 28
Average age = 19.2 + 11.2
Average age = 30.4