04 Sep '11 06:05

Two brothers, Bill and Phil, competed in a five-man nine-ball tournament. Each of the five players played one match of nine-ball against each of the others (and no ties). Each player received one point for each match he won; additionally, each player received one-half point for each match won by each opponent whom he defeated. Afterwards, each player put up equal money, such that the total pot in USD was equal to 10 times the total number of points won by all the players. Then the pot was redistributed back to the players according to their performance: each player received $10 for each point he earned during the competition. Bill beat his brother in their nine-ball match but ended up losing $11 on the night. How much did Phil win/lose on the night?