# Question #ed6fb

##### 1 Answer

May 9, 2017

#### Explanation:

The Average velocity which is needed to qualify for the race : 200 km/h.

Let the distance for each lap be

The Total distance is =

then total time taken to finish the race at average velocity 200km/h is =

If average velocity decraeses to 170 km/h,

then Total time taken to cover two laps =

Remaining time to finish and qualify for the race is =

So the average velocity to complete and qualify for the race is =