>>>>>John brought 5 bottles of beer, Bill brought 3 bottles, when I came. So, we drank this beer together and then I gave them $8 (all I had at this moment). How should they divide this sum?
>>>>
>>>>$7 for John, / $1 for Bill.
>>>
>>>And * for you :)
>>
>>You explain the other guys why this should be so.
>>
>>You could also pose the question as: "...John got $7, Bill got $1. Why did they share this way?"
>
>I personally have no idea. How much is the bottle anyway? :)

They all drank an equal amount - 2 2/3 bottles, so Bill must have donated 1/3 of a bottle & John donated 2 1/3 bottles - so John gets 7 times the amount that Bill does.