Answer:To find Jeff Gordon's average speed during the Daytona 500, we need to divide the total distance of the race by the time it took him to complete the race.
The Daytona 500 is 500 miles long, so if Gordon completed the race in 3 hours and 15 minutes, we can convert that time to total minutes:
3 hours * 60 minutes/hour + 15 minutes = 195 minutes
Now we can divide the distance of the race by the time it took to complete the race:
500 miles / (195 minutes / 60 minutes/hour) = 500 miles / 3.25 hours
So, Jeff Gordon's average speed during the Daytona 500 was approximately 152.3 miles per hour.