A van takes 6 hours to cover a distance of 378 Km. how much should the speed in Kmph be maintained to cover the same direction in 3/2th of the previous time?  Answers:
A) 50 kmph	B) 60 kmph	C) 70 kmph	D) 42 kmph	E) 90 kmph

Rationale: "time = 6 distence = 378 3 / 2 of 6 hours = 6 * 3 / 2 = 9 hours required speed = 378 / 9 = 42 kmph d"
Answer: D