The length of the bridge, which a train 475 metres long and travelling at 90 km/hr can cross in 30 seconds, is:	Choices.
A) 200 m	B) 225 m	C) 245 m	D) 250 m	E) 275 m
Speed = [90 X 5/18] m/sec = [25] m/sec   Time = 30 sec   Let the length of bridge be x metres.   Then, (475 + x)/30 = 25 =&gt; 475 + x= 750 =&gt; x = 275   Answer : 275 m
<result>E</result>
The length of the bridge, which a train 475 metres long and travelling at 90 km/hr can cross in 30 seconds, is: