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) 200m	B) 225m	C) 245m	D) 250m	E) 300m
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 245m
<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: