The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is? Options:
A) 298
B) 270
C) 245
D) 267
E) 239
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
<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?