Two regulars in the Jolly Quizmaster recently returned from a golfing holiday. They are extremely keen and would have played as often as possible. They are also very competitive and had a bet on every round that they played, and no match could finish all square - they would play extra holes to determine the winner.
The bet was £10 on each round of golf. Bob won four games. Joe ended the holiday up by £50.
How many times did they play?
If Bob won four games then Joe lost those four games and would be £40 down. Joe finished the holiday up £50, which means he won back the £40 he was down, and won a further five games to win £50. So Joe won nine games and Bob won four meaning that they played 13 times.