Answer:
3 hours and 30 minutes 
Explanation:
Kylie started basketball practice at 2:30 
Kylie finished basketball practice at 6:00 
Time duration = 3 hours and 30 minutes 
2 : 30 → 3 : 00
( 30 minutes )
3 : 00 → 6 : 00
( 3 hours )
3 hours + 30 minutes = 3 hours and 30 minutes