Multiple Choice Questions on A group of men decided to do a job in 4 days but 20 men dropped out everyday the job was completed a........... for HAS Exam Preparation

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Multiple Choice Questions

A group of men decided to do a job in 4 days but 20 men dropped out everyday the job was completed a...........

Quantitative Aptitude (HAS) Time and work
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    A group of men decided to do a job in 4 days but 20 men dropped out everyday ,the job was completed at the end of the 7th day .Find the men who are in the work initially ?

    155

    Incorrect Answer

    135

    Incorrect Answer

    120

    Incorrect Answer

    140

    Correct Answer
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    Explanation:

    Solution: 
    Total work = M * 4 = 4M
    M + (M+20) +…….
    7/2 [2M +6(-20)] =4M
    M=140

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