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 yr and that of the group of women is 21 yr, then the percentage of men and women in the group are respectively

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Correct option: B

80, 20

Option B (80, 20) is correct because the percentages of men and women are calculated using the combined mean formula.

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