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Discussion

  1. Einstein goes from Ahmedabad To Lucknow at the speed of 40 km/hr and returned at the speed of 60 km/hr .the average speed of Einstein during the whole journey is
    1. 48 km/hr
    2. 24 km/hr
    3. 50 km/hr
    4. none of these
  1. Correct Option: A

    Average speed =2 x 40 x 60 / ( 40+ 60)
    = 4800 / 100
    = 48 km/hr


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