The length of the bridge, which a train 200 metres long and travelling at 60 km/hr can cross in 30 seconds, is? Select the correct option:
A) 720 B) 470 C) 270 D) 370 m. E) 570
Speed = [60 X 5/18] m/sec = [50/3] m/sec Time = 30 sec Let the length of bridge be x metres. Then, (130 + x)/30   = 50/3 =&gt; (130 + x)/30   = 370=&gt; x   = 370 m.   Answer:370 m.
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The length of the bridge, which a train 200 metres long and travelling at 60 km/hr can cross in 30 seconds, is?