Multiple Choice Questions on 16 men can complete a job in 7 days The same work can be completed by 20 women in 9 days In how many........... for Punjab Patwari Exam Preparation

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Multiple Choice Questions

16 men can complete a job in 7 days The same work can be completed by 20 women in 9 days In how many...........

Quantitative Aptitude (Pb Patwari) Time and work
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    16 men can complete a job in 7 days. The same work can be completed by 20 women in 9 days. In how many days 14 men and 15 women can complete the job all working together?

     

    2 1/3 days

    Incorrect Answer

    7 days

    Incorrect Answer

    4 4/5 days

    Correct Answer

    8 day

    Incorrect Answer
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    Explanation:

    Solution: 
    16 m in 7 days so 14 m in 16×7/14 = 8 days.
    20w in 9 days so 15 w in 20×9/15 = 12 days.
    So together 1/8 + 1/12 = 5/24
    So 24/5 days.

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