Additional Information

Five racing drivers, Alan, Bob, Chris, Don, and Eugene, enter into a contest that consists of 6 races. The results of all six races are listed below:

• Bob always finishes ahead of Chris.
• Alan finishes either first or last.
• Eugene finishes either first or last.
• There are no ties in any race.
• Every driver finishes each race.

In each race, two points are awarded for a fifth place finish, four points for fourth, six points for third, eight points for second, and ten points for first.