>>>>>>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
>>
>>He-he. It has another correct answer too, BTW :)
>
>Does this involve brothers & sisters who are not twins ?
>
Haven't thought about this possibility.

>If there were also 1 set of quadruplets, then there would be 33 in the class.

Yes, this is another one.

>Or is the answer simpler/more obvious than that

No, the way I saw this question asked, answers 31 and 33 are correct.