The length of the bridge, which a train 130 meters long and travelling at 45 km/hr can cross in 30 seconds, is?
Choose one
A) 772 m
B) 167 m
C) 245 m
D) 267 m
E) 127 m
Speed = (45 * 5/18) m/sec = (25/2) m/sec. Time = 30 sec. Let the length of bridge be x meters. 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 meters long and travelling at 45 km/hr can cross in 30 seconds, is?