In what time will a railway train 80 m long moving at the rate of 36 kmph pass a telegraph post on its way?	Pick:
A) 4 sec
B) 7 sec
C) 2 sec
D) 6 sec
E) 8 sec

Rationale: "t = 80 / 36 * 18 / 5 = 8 sec answer : e"
Answer: E