The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:	Choose the correct choice from the following answers.
A) 200 m B) 225 m C) 245 m D) 250 m E) 350 m
Explanation:   Speed = [45 X 5/18] m/sec = [25/2] m/sec Time = 30 sec Let the length of bridge be x metres. Then, (130 + x)/30 = 25/2 =&gt; 2(130 + x) = 750 =&gt; x = 245 m.   ANSWER IS 245 m
<result>C</result>
The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is: