The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is? Choices:
A) 866 m
B) 255 m
C) 245 m
D) 167 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?