A train 120m long is running at 60kmph. In how much time will it pass a platform 240m long?
Choose the correct choice from the following choices:
A) 15.6 seconds
B) 24.6 seconds
C) 21.6 seconds
D) 30.6 seconds
E) 35.6 seconds

Rationale: distance travelled = 120 + 240 m = 360 m speed = 60 * 5 / 8 = 50 / 3 m time = 360 * 3 / 50 = 21.6 seconds answer : c .
Answer: C