The length of the bridge, which a train 500 metres long and travelling at 42 km/hr can cross in 60 seconds, is?
Choose the correct choice from the following answers:
A) 100 m B) 200 m C) 300 m D) 250 m E) 350 m
Speed = [42 X 5/18] m/sec = [35/3]m/sec   Time = 30 sec Let the length of bridge be x metres. Then, (130 + x)/60   35/3 = (130 + x)/60   500+x=700   =&gt;x=200 m   Answer:200 m
<result>B</result>
The length of the bridge, which a train 500 metres long and travelling at 42 km/hr can cross in 60 seconds, is?