Question

The mean age of a combined group of men and women is 25 years. If the mean age of the
group of men is 26 years and that of women is 21 years, find out percentage of men and women in
the group
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Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer

80% and 20%

Step-by-step explanation:

Let the number of men and women be x and y respectively.

Sum1( age of men) + Sum2 ( age of women)÷ (x+y) = 25

S1 + S2 = 25(x+y)

S1 + S2= 25x + 25y

Sum of age of men (S1)  ÷ x = 26

S1 = 26x

Similarly,

S2 = 21y

Putting in eq1

26x + 21y = 25x + 25y

x = 4y

No of men = 4 (No of women)

Percentage 0f men = 80%

Percentage of women = 20%