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Discussion

  1. A man travels 35 km partly at 4 km/hr and at 5 km/hr. If he covers former distance at 5 km/hr and later distance at 4 km/hr, he could cover 2 km more in the same time. The time taken to cover the whole distance at original rate is
    1. 9 hours
    2. 7 hours
    3. 4.5 hours
    4. 8 hours
  1. Correct Option: D

    Suppose the man covers first distance in x hrs. and second distance in y hrs.
    Then , 4x + 5y = 35 and 5x +4y= 37
    Solving these equation , we get
    X=5 and y=3
    Total time taken = (5+3) hrs= 8hrs


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