The length of the bridge, which a train 180 metres long and travelling at 45 km/hr can cross in 30 ...
The length of the bridge, which a train 180 metres long and travelling at 45 km/hr can cross in 30 seconds, is?
Answer/Solution
195
Steps/Work
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 => 2(180 + x) = 750 => x = 195 m.
Answer: D
Answer: D