Michelle went on a hike. She started on the trail at 6:45 am and returned at 3:28 pm how long did she hike

The answer is 3 hours and 17 minutes.

45-28 = 17

6-3 = 3

Therefore the answer is 3 hours and 17 minutes

6:45, 7:45, 8:45, 9:45, 10:45, 11:45, 12:45, 1:45, 2:45 = 8 hours

2:45+15 minutes=3:00

3:00+28 minutes=3:28

So, 8 hours+15 minutes+28 minutes = 8 hours and 43 minutes.

Michelle hiked for 8 hours and 43 minutes.