Answer:
5 hours and 18 minutes. (318 minutes)
Explanation:
1. Add 35 minutes to 8:25 to get it to 9:00.
2. Add 3 hours (180 min.) to 9:00 to get to 12:00.
3. Add 1 hour and 43 minutes (103 min.) to get to 1:43 PM.
35 + 180 + 103 = 318 min. = 5 hours and 18 minutes