Nikhil Deshpande
1

Alex runs 6 laps each of them measuring to 6000 ft, for a total of 36,000 feet in 90 minutes. Once we figure this out, the next step to take is to convert this value into feet per hour. So, we will convert the 90 minutes to 1.5 hours. Then we can solve for our final answer by doing this: 36,000 feet / 1.5 hrs = 24,000 feet / hour.