Answer:
1.5 miles lenox lead the way.
Explanation:
Given:
After just 4 tenths of a 2.5-mile race was completed lenox took the lead he remained there until the end of the race.
Now, to find the miles lenox lead the way.
Total miles of the race = 2.5 miles.
Race was completed till lenox lead =




Mile before lenox took the lead in the race = 1 mile.
As given, until the end of the race lenox took the lead.
Now, to get the miles lenox lead the way we subtract mile before lenox took the lead in the race from total miles of the race:

Therefore, 1.5 miles lenox lead the way.