Answer:
The rates are not equivalent. Jill's rate is higher.
Explanation:
We can find the unit rate in miles per minute for each and compare.
Jack:
24 miles in 30 min
(24 miles)/(30 min) = 0.8 miles/min
Jill:
52 miles in 60 min
(52 miles)/(60 min) = 0.866... miles/min
The rates are not equivalent. Jill's rate is higher.