A jeep takes 4 hours to cover a distance of 620 Km. how much should the speed in Kmph be maintained to cover the same direction in 3/2th of the previous time? Choose the correct choice from the following:
A) 148 kmph  B) 152 kmph  C) 106 kmph  D) 103 kmph  E) 165 kmph

Rationale: "time = 4 distance = 620 3 / 2 of 4 hours = 4 * 3 / 2 = 6 hours required speed = 620 / 6 = 103 kmph d )"
Answer: D