The length of the bridge, which a train 170 metres long and travelling at 45 km/hr can cross in 30 seconds, is?  Choose the correct choice from the following.
A) 876 m	B) 157 m	C) 205 m	D) 156 m	E) 167 m
Speed = [45 X 5/18] m/sec   = [25/2] m/sec Time = 30 sec Let the length of bridge be x metres. Then, (170 + x)/30 = 25/2   =&gt; 2(170 + x) = 750 =&gt; x   = 205 m.   Answer: 205 m
<result>C</result>
The length of the bridge, which a train 170 metres long and travelling at 45 km/hr can cross in 30 seconds, is?