Given:
A hiker walks 2.6 miles an hour.
Her trail is 20.8 miles long.
So, the time is taken to finish = distance over the speed
Speed = 2.6 miles an hour
Distance = 20.8 miles
So, time = 20.8/2.6 = 8 hours
As shown, He starts waking at 7 am
So, he will arrive 8 hours after 7 am
So, 7 am + 8 hours = 15 which will be 12 + 3
So, he will arrive at 3 pm
So, the answer will be 3 pm