Speed = 45 * 5/18 = 25/2 m/sec
Total distance covered = 410 + 140 = 550 m
Required time = 550 * 2/25 = 44 se
A train 410 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?
a: 40 sec
b: 50 sec
c: 44 sec
d: 49 sec
e: 60 sec