We know that the wife and husband arrived home 20 minutes earlier than usual, even though the wife left home at the regular time. We know that the wife left at the time that she normally leaves, because she had no idea that the husband had arrived early. This isn't so hard if you look at it from another perspective. Two-guns-were-fired-from-the-same-place-at-an-interval-of-93761.html Ray-who-lives-in-the-countryside-caught-a-train-for-home-ea-84295.html How much time did the man spend walking?Īs they arrived 20 minutes earlier than usual, they saved 20 minutes on round trip from home to station (home-station-home) -> 10 minutes in each direction (home-station) -> wife meets husband 10 minutes earlier the usual meeting time -> husband arrived an hour earlier the usual meeting time, so he must have spent waking the rest of the time before their meeting, which is hour-10 minutes=50 minutes.
When they arrive home the man notices that they arrived 20 minutes earlier than usual. Eventually his wife sees him on her way to the station and drives him the rest of the way home. He immediately begins walking home along the same route the wife drives.
One day he catches an earlier train and arrives at the station an hour early. She always arrives exactly on time to pick him up. Each day a man meets his wife at the train station after work, and then she drives him home.
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