A train 160 m long passes a man,running at 6 kmph in the direction opposite to that of the train,in 6 seconds.The speed of the train is
Choose the correct answer.
A) 54 kmph
B) 60 kmph
C) 66 kmph
D) 72 kmph
E) 90 kmph

Rationale: "speed of train relative to man : 160 / 6 * 18 / 5 km / hr = 96 km / hr let speed of train = x therefore x + 6 = 96 x = 96 - 6 x = 90 km / hr answer : e"
Answer: E