D = 360 + 120 = 480
S = 54 * 5/18 = 15 mps
T = 480/15 = 32 sec
A train 360 meters long is running with a speed of 54 kmph. The time taken by it to cross a tunnel 120 meters long is?
Options:
a: 29
b: 18
c: 48
d: 99
e: 32