JEE MATHEMATICS MCQ: STATISTICS

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The mean age of a combined group of men and women is 25 yr. if the mean age of the group of men is 26 and that of the group of women is 21, then the percentage of men and women in the group is

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Correct option: B

80, 20

Option B (80, 20) is correct because the percentage of men and women is calculated by setting up a weighted average equation for the combined mean age.

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