The length of the bridge, which a train 150 meters long and travelling at 45 km/hr can cross in 30 seconds, is:
Answers.
A) 230 B) 225 C) 245 D) 238 E) 236
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: Option 225
<result>B</result>
The length of the bridge, which a train 150 meters long and travelling at 45 km/hr can cross in 30 seconds, is: