Smith, Robinson, and Jones are a conductor, a porter, and an engineer on a certain train. Also aboard the train are three passengers with the same last names: Mr. Smith, Mr. Robinson, and Mr. Jones.
Mr. Robinson lives in
The porter lives exactly halfway between
Mr. Jones earns exactly $50,000 per year.
The porter’s nearest neighbor, who is one of the three passengers, earns exactly three times as much as the porter.
Smith usually beats the conductor at tennis.
The passenger whose last name is the same as the porter’s lives in
Who is the engineer?
