A train 150 m long passes a telegraph post in 12 seconds. How long will it take to cross a bridge 250 m long?
A20 seconds
B28 seconds
C32 seconds
D35 seconds
Explanation
Speed = 150 / 12 = 12.5 m/s. Total distance to cross bridge = 150 + 250 = 400 m. Time = 400 / 12.5 = 32 seconds.
Exam Relevance
- Topic: Speed, Time & Distance
- Subtopic: Trains

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