Try and help me solve this question.

There are 20 men. 10 of them are sad. 5 are mad. 5 are happy.
If you gave them each a number it would look like this.
-------------------------
1.Sad
2.sad
3.sad
4.sad
5.sad
6.sad
7.sad
8.sad
9.sad
10.mad
11.mad
12.mad
13.mad
14.mad
15.mad
16.happy
17.happy
18.happy
19.happy
20.happy
-------------------------

Now if you divided it by 5.
Then doubled that sum.
Then flipped it around descending.
Which one's probably had the beer?