A train 150 m long runs at 54 km/h. How long does it take to pass a pole?

  1. 7 s
  2. 20 s
  3. 14 s
  4. 10 s
Answer

D) 10 s

Speed = 54 tfrac518 = 15 m/s; time = 150 div 15 = 10 s.

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