The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is? Choose one
A) 298 m B) 277 m C) 245 m D) 256 m E) 267 m
Speed = [45 X 5/18] m/sec   = [25/2] m/sec Time = 30 sec Let the length of bridge be x metres. Then, (130 + x)/30   = 25/2 =&gt; 2(130 + x) = 750 =&gt; x   = 245 m.   Answer: 245 m
<result>C</result>
The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is?