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Discussion

  1. In how many minutes will Rohit cover a distance of 800 m, if he runs at speed of 10 km/hr?
    1. 5 min 12 sec
    2. 4 min 40 sec
    3. 5 min
    4. 4 min 48 sec
  1. Correct Option: D

    Rohit's speed = 10 Km/hr = (10 x 5/18) m/sec = 50/18 m/sec

    Time taken to cover 800 m = (800 / (50/18) ) sec
    = (800 x 18/50) sec = 288 sec = 4 min 48 sec


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