A train traveling at 100 kmph overtakes a motorbike traveling at 64 kmph in 40 seconds. What is the length of the train in meters?

• ANS: 400
  
  Asuming Bike and Train travelling in the same direction. Total relative Speed becomes 100-64 = 36 kmph.
  1 kmph = 5/18 m/sec. 36 kmph = 36 * 5 /18 = 10 m/sec.
  Relative speed = 10 m/sec.
  Time taken to overtake is 40 seconds.Distance traveled = 10 * 40 = 400 meters.
  
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