Final answer:
Saul's speed for the first 8 miles and the rest of the race is 5.71 mph.
Step-by-step explanation:
To find Saul's speed for the first 8 miles, we can use the formula speed = distance / time. Saul took 1.4 hours to run the first 8 miles, so his speed for the first 8 miles is 8 miles / 1.4 hours = 5.71 mph. To find Saul's speed for the rest of the race, we can use the same formula. Saul took 1.1 hours to run the rest of the race, so his speed for the rest of the race is (13.1 miles - 8 miles) / 1.1 hours = 5.71 mph. Therefore, Saul's speed for the first 8 miles and the rest of the race is 5.71 mph.