Question
At a Yoga center, 60% of the members are men and 40% of
the members are women. If the average age of the men is 55 years and the average age of the women is 45 years, then what is the average age (in years) of all the members?Solution
60% of the members are men and average age of men is 55 years old. = 60% of the members are 55 years old. 40% of the members are women and the average age of women is 45 years old. = 40% of the members are 45 years old. Average age = 0.6 x 55 + 0.4 x 45 Average age = 33.0 + 18.0 Average age = 51.
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