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 most appropriate option:  A) 276 m  B) 167 m  C) 245 metres  D) 167 m  E) 178 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 metres
<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?