The length of the bridge, which a train 130 m long and traveling at 45 km/hr can cross in 30 sec is?  Select the correct option
A) 257 m B) 632 m C) 245 m D) 737 m E) 243 m
Speed = 45 * 5/18 = 25/2 m/sec.   Time = 30 sec   Let the length of bridge be x meters.   Then, (130 + x)/30 = 25/2   x = 245 m.   Answer:245 m
<result>C</result>
The length of the bridge, which a train 130 m long and traveling at 45 km/hr can cross in 30 sec is?