Question

A and B run a 5 km race on a round course of 400 m if their speed ratio 5:4 the number of times the winner passes the other is

Answer 1

Answer:

Since,the ratio is 5:4, you can see that in the time that B takes to finish one lap, A is already done with the first lap is now 100 m ahead of B. Following this pattern, when B completes the 4th lap, A completes the 5th lap. This is the first time that A will pass B. By now, A has completed 5*400=2000 m of race.