The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is?  Choose the correct choice from the following answers:
A) 76 m	B) 178 m	C) 245 m	D) 187 m	E) 176 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?