The length of the bridge, which a train 150 meters long and travelling at 45 km/hr can cross in 30 seconds, is?
Select:
A) 766 m  B) 156 m  C) 245 m  D) 225 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, (150 + X)/30 = 25/2   ==&gt; 2(150 + X) = 750 ==&gt; X   = 225 m.   Answer: 225 m
<result>D</result>
The length of the bridge, which a train 150 meters long and travelling at 45 km/hr can cross in 30 seconds, is?