A 130 m long train crosses a bridge 30 seconds at 45 kmph. The length of the bridge is ? A. 250 m B. 245 m C. 225 m D. 200 m Answer Workspace Report Discuss Answer with explanation Answer: Option B Explanation Let the length of the bridge be x m. Speed of the train = (130+x)/30 m/sec. But, speed =(45*5/18)m/sec. =25/2 m/sec. ⇒ (130+x)/30 = 25/2 ⇒ 130 + x = 375 ∴ x = 245 m Workspace
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