Question
A train 800 metres long is running at a speed of 78 km/hr. If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is:
Answer: Option C
- Speed = 78 x 5 m/sec = 65 m/sec. 18 3
Time = 1 minute = 60 seconds.
Let the length of the tunnel be x metres.
Then, 800 + x = 65 60 3
3(800 + x) = 3900
x = 500
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- Speed = 78 x 5 m/sec = 65 m/sec. 18 3
Time = 1 minute = 60 seconds.
Let the length of the tunnel be x metres.
Then, 800 + x = 65 60 3
3(800 + x) = 3900
x = 500
Was this answer helpful ?
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