>>>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?
>>
>>Nadya,
>>
>>I'm allowing myself one question: Does the specific wording of your puzzle matter or is it solved by just logic?
>>
>>Renoir
>
>It's solved by simple math, as Hilmar already did.
>
>Ok, here is another one:
>This class is known, because there are 4 pairs of twins study there. Once there was a meeting and all parents came (each family has a father & mother). All together (with students) there were 85 persons on this meeting. How many students are in this class?

31