A can run 128 metre in 28 seconds and B in 32 seconds. By what distance A beat B?
Choose the most appropriate option:  A) 38 metre  B) 28 metre  C) 23 metre  D) 16 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 = 128 / 32 = 4 m / s distance covered by b in 4 seconds = speed ã — time = 4 ã — 4 = 16 metre i . e . , a beat b by 16 metre answer is d
Answer: D