102. Airline Crew Logic Puzzle An airline crew consists of three positions — pilot, co-pilot, and flight engineer — filled by three people: Janet, Thomas, and Harry (not necessarily in that order).• The co-pilot is an only child and earns the least. • The pilot earns exactly twice as much as the co-pilot. • Harry, who is married to Thomas’s sister, earns more than the pilot.Determine: 1. Who is the co-pilot? 2. Who earns twice as much as the co-pilot? 3. Who is the flight engineer? 4. Who is the pilot? Added 30 June 2011 Show Hint Show Solution Hint: First use the fact that the co-pilot is an only child to eliminate one of the names from that role. Solution: Thomas cannot be the co-pilot because Harry is married to Thomas’s sister, so Thomas is not an only child. Therefore Janet must be the co-pilot, making her the lowest earner.The pilot earns exactly twice as much as the co-pilot. Since Janet is already the co-pilot and Harry earns more than the pilot, the only person who can be the pilot is Thomas.That leaves Harry as the flight engineer. Harry’s salary is higher than the pilot’s, satisfying the third clue.Answers: 1. Co-pilot: Janet 2. Earns twice the co-pilot’s pay: Thomas 3. Flight engineer: Harry 4. Pilot: Thomas
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