The mean age of a combined group of men and women is 25 yrs . If mean age of men is 26 and that of women is 21 , then percentage of men and women in t

Question

The mean age of a combined group of men and women is 25 yrs . If mean age of men is 26 and that of women is 21 , then percentage of men and women in t

The mean age of a combined group of men and women is 25 yrs . If mean age of men is 26 and that of women is 21 , then percentage of men and women in the group , is ,
A. 60 , 40
B. 80 , 20
C. 20 , 80
D. 30 , 70

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - B
`25 = (26 x_(1) + 21x_(2))/( x_(1) + x_(2))`
`x_(1) = 4x_(2) therefore x_(1) = 80% , x_(2) = 20%`

4 views Answered 2023-02-05 15:29