The length of the bridge, which a train 130 meters long and travelling at 45 km/hr can cross in 30 seconds, is? Choices
A) 265 m	B) 755 m	C) 245 m	D) 127 m	E) 156 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?