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A 200 metres long train crosses a bridge 400 metres long in 40 seconds. What is speed (in km/hr) of the train?

  1. 70
  2. 72
  3. 54
  4. 65

Answer (Detailed Solution Below)

Option 3 : 54
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Detailed Solution

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The train crosses = 200 + 400 = 600 m

∴ Speed of the train = 600/40 = 15 m/s = 15 × (18/5) km/hr = 54 km/hr

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