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NTSE Sample Paper NTSE SAT Practice Test-14

  • question_answer
    12 men complete a work in 9 days. After they have worked for 6 days, 6 more men join them. How many days will they take to complete the remaining work?

    A) 2            

    B) 3

    C) 4                                 

    D) 5

    Correct Answer: A

    Solution :

    [a] 1 man's 1 day work =\[\frac{1}{108}\] 12 men's 6 days work \[=\frac{1}{9}\times 6=2/3\] Remaining work =1/3, men's 1 day work \[=\frac{1}{108}\times 18=\frac{1}{6}\] \[\therefore \,\,\frac{1}{3}\]of work 18 men will do in \[\frac{1}{3}\div \frac{1}{6}\]= 2 days


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