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NTSE Sample Paper NTSE SAT Practice Test-17

  • question_answer
    2 men and 3 boys can do a piece of work in 10 days while 3 men and 2 boys can do the same in 8 days. Compare the work done by a man with that of a boy.

    A) 3:1                               

    B) 5:2

    C) 7:2       

    D) 3:2

    Correct Answer: C

    Solution :

    [c] 2 m + 3 b can do a work in 10 days \[\Rightarrow \]20 m + 30 b can do it in one day Similarly, 24 m + 16 b can also do it in 1 day \[\therefore \] 20m+30b=24m+ 16b \[\Rightarrow \,\,4m\,=14\,b\,or\,\frac{m}{b}=\frac{7}{2}\] \[\therefore \] The required ratio is 7: 2                  


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