Multiple Choice Questions on The average age of male employees is 52 years and that of female employees is 42 years The mean age ........... for CDS Exam Preparation

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Multiple Choice Questions

The average age of male employees is 52 years and that of female employees is 42 years The mean age ...........

Quantitative Aptitude (CDS) Average
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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%

    Correct Answer

     20% and 80%

    Incorrect Answer

    50% and 50%

    Incorrect Answer

    52% and 48%

    Incorrect Answer
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    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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