The length of the bridge, which a train 180 metres long and travelling at 45 km/hr can cross in 30 seconds, is?	Choose the correct choice from the following options
A) 245	B) 777	C) 282	D) 195	E) 288
Speed = [45 X 5/18] m/sec = [25/2] m/sec Time = 30 sec Let the length of bridge be x metres. Then, (180 + x)/30 = 25/2 =&gt; 2(180 + x) = 750 =&gt; x = 195 m.   Answer: 195
<result>D</result>
The length of the bridge, which a train 180 metres long and travelling at 45 km/hr can cross in 30 seconds, is?