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
A) 288
B) 66
C) 245
D) 77
E) 29
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: 245
<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: