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8th Class Mathematics Related to Competitive Exam Question Bank Arithmetic

  • question_answer
    175 men can dig a canal 3150 m long in 36 days. How many men are required to dig a canal 3900 m long in 24 days?

    A) 256                       

    B) 225

    C) 325                

    D) 384

    Correct Answer: C

    Solution :

    No. of men Length No. of days
    175 3150 36
    x 3900
    Length is in inverse variation with number of days but in direct variation with number of men. \[\frac{1}{8}\] \[\frac{1}{8}\]


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