Multiple Choice Questions on If 140 men working 8 hours per day can complete a piece of work in 30 days how many hours per day mu........... for NABARD Assistant Manager Exam Preparation

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Multiple Choice Questions

If 140 men working 8 hours per day can complete a piece of work in 30 days how many hours per day mu...........

Quantitative Aptitude (Phase-1) Time and work
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    If 140 men working 8 hours per day can complete a piece of work in 30 days, how many hours per day must 20 men work to complete the same job in 12 days?

    7 hrs

    Correct Answer

    8 hrs

    Incorrect Answer

    9 hrs

    Incorrect Answer

    6 hrs

    Incorrect Answer
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    Explanation:

    Total number of man hours needed to complete the work is 140*8*30

    So, for 20 men to complete the work in 12 days,

    the number of hours they need to work each day = (140*8*30)/(20*12) = 140 hours

    1 men need to work each day = 140/20 = 7 hrs.

    Hence, option 1 is the correct answer.

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