Mrs. Bishop ran her last marathon (26.2 miles) in 4 hours 48 minutes while Dr. Farrar ran a half-marathon (13.1 miles) in 2 ½ hours. Who had the faster running speed? How do you know?

Come on. Change the times to minutes (each hour is 60 min)

then divide each distance by its time....that is the speed of each.

Mrs. Bishop: 26.2mi/4h = ----mi/h.

Dr. Farrar: 13.1mi/2.5h - ----mi/h.

Bishop ran twice as far in LESS THAN twice Farrar's time

To determine who had the faster running speed, we can calculate the average speed for each person by dividing the distance covered by the time taken.

For Mrs. Bishop:
Distance covered = 26.2 miles
Time taken = 4 hours 48 minutes = 4.8 hours (convert minutes to hours by dividing by 60)

Average speed of Mrs. Bishop = Distance / Time taken
= 26.2 miles / 4.8 hours
≈ 5.458 miles per hour

For Dr. Farrar:
Distance covered = 13.1 miles
Time taken = 2 ½ hours = 2.5 hours

Average speed of Dr. Farrar = Distance / Time taken
= 13.1 miles / 2.5 hours
= 5.24 miles per hour

Comparing the average speeds, we can see that Mrs. Bishop had a faster running speed (5.458 miles per hour) than Dr. Farrar (5.24 miles per hour).

Therefore, Mrs. Bishop had the faster running speed.