In a race of 300 metres A rates B by 15 metres or 5 seconds, Hoe much time A take to complete the race?
Answer: C
From the question it is clear that speed of B = 15/5 = 3 m/s
the time taken by B to cover 300 m = 300 / 3 = 100 sec.
Hence, Time taken by A to complete the race = 100-5 = 95 sec.