The length of the bridge, which a train 110 metres long and travelling at 45 km/hr can cross in 30 seconds, is: Pick one:
A) 230
B) 240
C) 245
D) 250
E) 265
Speed = [45 X 5/18] m/sec = [25/2] m/sec Time = 30 sec Let the length of bridge be x metres. Then, (110 + x)/30 = 25/2 =&gt; 2(110 + x) = 750 =&gt; x = 265 m.   Answer: Option 265
<result>E</result>
The length of the bridge, which a train 110 metres long and travelling at 45 km/hr can cross in 30 seconds, is: