The length of the bridge, which a train 140 meters long and travelling at 45 km/hr can cross in 30 ...

The length of the bridge, which a train 140 meters long and travelling at 45 km/hr can cross in 30 seconds, is:

Quiz

Answer/Solution

235

Steps/Work

Speed = (45 * 5/18) m/sec = (25/2) m/sec. Time = 30 sec. Let the length of bridge be x meters. Then, (140 + X)/30
= 25/2 ==> 2(140 + X) = 750 ==> X = 235 m.
Answer: C

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