A train 130 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 option.
A) 54 kmph	B) 60 kmph	C) 66 kmph	D) 72 kmph	E) 82 kmph

Rationale: "speed of train relative to man : 130 / 6 * 18 / 5 km / hr = 78 km / hr let speed of train = x therefore x + 6 = 78 x = 78 - 6 x = 72 km / hr answer : d"
Answer: D