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The average age of male employees is 52 years and that of female employees is 42 years. The mean age of all employees is 50 years. The percentage of male and female employees are respectively

80% and 20%

20% and 80%

50% and 50%

52% and 48%

Explanation:

Let the number of male employees be ?? and female employees be ??

Total average age of male employees = 52x

Total average age of female employees = 42x

$Mean\: age\: of\: all\: employees = \frac{52x+42x}{x+y}=50$

On solving further we get 2x = 8y

x : y = 4 : 1

Percent of male employees

$=\frac{4}{5}\times100= 80\%$

Percent of male employees

$=\frac{1}{5}\times100= 20\%$

By: Munesh Kumari

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