A train covers a distance at a speed of 150kmph in 3 hours. To cover the same distance in 1 hours, it must travel at a speed of?  Choose the correct answer: A) 320 B) 250 C) 560 D) 400 E) 450

Rationale: distance = 150 * 3 = 450 km required speed = 450 / 1 = 450 km / hr answer is e
Answer: E