Not always true


#1

The expected solution is true only if we assume that wife will start going to the station before Joe arrives there. Please state that in the problem description.


#2

it’s given that when joe arrives at station at 6pm his wife is there to pick him up. so it’s obvious she leaves for the station before he arrives.


#3

But this time he arrived an hour early. The intended solution is not correct if the wife starts going to the train station after 5pm.