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A 200 m long train running at 72 km/h enters a 1 km long tunnel. For how long is the entire train inside the tunnel?

Competition practiceSpeed, Time & Distance
  • A60 seconds
  • B50 seconds
  • C40 seconds
  • D10 seconds

Step-by-Step Solution

From the rear entering to the front leaving: m at 20 m/s s.
Answer: C) 40 seconds

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