Enigma 282: Beer bounty
From New Scientist #1429, 8th November 1984 [link]
Apart from providing the beer at my birthday party, I decided to encourage the abstemious by paying every guest a bounty of 10p for every pint drunk by someone else minus 20p for every pint he drank himself. I can’t remember all the details, but I do know that I paid out £9 in bounty altogether. Each guest drank a different odd number of pints, and everyone received some bounty money except David, who consumed so much beer (no one else’s consumption was within 3 pints of his) that he got exactly nothing in bounty.
From that information you can probably work out just how much each guest drank. If you do, please let me know.