D = 580 + 280 = 800
S = 34 * 5/18 = 9 mps
T = 800/9 = 89 sec
A train 520 meters long is running with a speed of 34 kmph. The time taken by it to cross a tunnel 280 meters long is?
Options:
A: 287 sec
B: 89 sec
C: 48 sec
D: 16 sec
E: 17 sec