Question:
The length of a train is 110 metres. It is running at the speed of 72 kmph. How much will it take to cross a bridge 132 m in length?

Option A):
14 sec
Option B):
12.42 sec
Option C):
9.8 sec
Option D):
12.1 sec

Correct Answer is Option D):
12.1 sec

Explanation:
d=(110+132)m
v=72*5/18=20 m/s
t=d/v