text: to qualify for the indianapolis 500 race a car must  must average 350 km/hr for four laps. if a driver average to qualify for the indianapolis 500 race a car must  must average 350 km/hr for four laps. if a driver averages 320 km/hr for the first two laps, what average speed must be achieved for final two laps in order to qualify? approximately 386.2068966 km/hr.  if the question was to qualify for the indianapolis 500 race a car must average 350 km/hr for four minutes. if a driver averages 320 km/hr for the first two minutes, what average speed must be achieved for final two minutes in order to qualify? then the answer would be 380 km/hr.  if you want me to show you how i solved the problem, feel free to email me.