A motorcyclist goes from Nagpur to Pune, a distance of 500 kms at an average of 100 kmph speed. Another man starts from Nagpur by car 3 Â½ hours after the first, and reaches Pune Â½ hour earlier. What is the ratio of the speed of the motorcycle and the car? Pick
A) 1 : 2  B) 1 : 7  C) 3 : 5  D) 1 : 5  E) 1 : 1

Rationale: t = 500 / 100 = 10 h t = 10 - 4 = 6 time ratio = 10 : 6 = 5 : 3 speed ratio = 3 : 5 answer : c
Answer: C