D = 100 + 245 = 345 m
S = 54* 5/18 = 15
T = 345 * 1/15 = 23 sec
How long does a train 100 m long traveling at 54 kmph takes to cross a station of 250 m in length?

(1) 22 sec
(2) 20 sec
(3) 15 sec
(4) 23 sec
(5) 16 sec