Answer:
1 1/4 miles
Explanation:
I don't know a proper equation but here is how I solved it. 1/2 is 2/4 so I added a fourth of that 2/4 to the mile he ran before he twisted his ankle so 1/4 +3/4 = 4/4 or 1 mile. So then adding what's left of the 2/4, you have 1 1/4 = d.
Let me know if I'm wrong