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The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is

A. 200 meter

B. 225 meter

C. 245 meter

D. 250 meter

Correct Answer : C.


Speed = 45 x518m/sec = 252m/sec.Time = 30 sec.  Let the length of bridge be x metres.  Then, 130 + x30 =252 ⇒2(130 + x) = 750  ⇒x = 245 meter

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