D = 110 + 390 = 500 m
S = 60 * 5/18 = 50/3
T = 500 * 3/50 = 30 sec
How long does a train 110 m long traveling at 60 kmph takes to cross a bridge of 390 m in length?
Options:
1: 18.9 sec
2: 88.9 sec
3: 22.9 sec
4: 30.00 sec
5: 72.0 sec