D = 600 + 170 = 770
S = 50 * 5/18 = 14 mps
T = 770/14 = 55 se
A train 600 meters long is running with a speed of 50 kmph. The time taken by it to cross a tunnel 170 meters long is?
A: 287 sec
B: 288 sec
C: 55 sec
D: 16 sec
E: 17 sec