A can run 160 metre in 28 seconds and B in 32 seconds. By what distance A beat B?
Choose the correct option.
A) 38 metre B) 28 metre C) 20 metre D) 15 metre E) 28 metre

Rationale: "clearly , a beats b by 4 seconds now find out how much b will run in these 4 seconds speed of b = distance / time taken by b = 160 / 32 = 5 m / s distance covered by b in 4 seconds = speed ã — time = 5 ã — 4 = 20 metre i . e . , a beat b by 20 metre answer is c"
Answer: C