The length of the bridge, which a train 150 meters long and travelling at 45 km/hr can cross in 30 seconds, is:  Choose the correct option.
A) 239	B) 277	C) 225	D) 88	E) 232
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
<result>C</result>
The length of the bridge, which a train 150 meters long and travelling at 45 km/hr can cross in 30 seconds, is: