Question

The average age of a combined group of men and women is 25 years. If the average age of the group of men is 26 years and the of the group of women is 21 years, then the percentage of men and women in the group is respectively 

a. 20, 80 

b. 40, 60 

c. 60, 40 

d. 80, 20

Answer 1

Correct option d. 80, 20

Explanation:

Let No. of Man = M 

Let No. of Women = W 

26 M + 21 W = 25 (M + W) 

M = 4 W 

M : W = 4 : 1