The length of the bridge, which a train 155 metres long and travelling at 45 km/hr can cross in 30 seconds, is:	Select:
A) 220 m B) 225 m C) 245 m D) 250 m E) 270 m
Let the length of the bridge:L   The equation now is L+155/12.5m/s(45km/hr or12.5m/s)=30   Solving, L =220m   220 mNSWER:220 m
<result>A</result>
The length of the bridge, which a train 155 metres long and travelling at 45 km/hr can cross in 30 seconds, is: