A train 268 m long is moving at a speed of 17 km/h. How much time will it take…
2026
A train 268 m long is moving at a speed of 17 km/h. How much time will it take to cross a tunnel 440 m long? (Round off to the nearest second)
- A.
157
- B.
153
- C.
150
- D.
165
Attempted by 18 students.
Show answer & explanation
Correct answer: C
To cross the tunnel, the train covers its own length plus the tunnel's length: 268 m + 440 m = 708 meters.
Convert speed to m/s: 17 km/h = 17 * (5/18) ≈ 4.722 m/s.
Time = Distance / Speed = 708 / 4.722 ≈ 149.93 seconds.
Rounding to the nearest second, we get 150 seconds.
Final Answer: Option 3