Question

krishna and karan completed 200m race.krishna gave karan a headshot of 300m and his speed was twice that of karan.when karan reached the 800m mark.krishna reduced his speed half but still beats karan by 150 seconds.what was speed of karan?​

Answer 1

Step-by-step explanation:

krishna and karan completed 200m race.krishna gave karan a headshot of 300m and his speed was twice that of karan.when karan reached the 800m mark.krishna reduced his speed half but still beats karan by 150 seconds.what was speed of karan?

Deadheat means both of them crossed the finish line at the same time.

So, the difference between two cases is B starts 20m nearer to finish line and finishes the race 5 seconds earlier. That means B travels 20m in 5secs. Since B is 60m away from finish line in second case it takes 5*3=15secs to finish the race. Since it is a deadheat A also finishes in 15secs i.e., A travels 100m in 15 secs, hence to run 200m A will take 30secs