When I saw a problem on the site, it had a 2.6 rating. Since I really liked the problem, I voted 5 for it, and saw that the rating went from 2.6 to 2.75.

1) How many people voted for it before I did?

2)What would the rating of this problem be if two more people voted 5 for this problem?

(In reply to Solution by DuCk)

I like it but you can make it easier (one unknown) by solving this equation:

2.75 =(2.6x+5)/(x+1)

with x being the number of voters since total votes would have to equal the averaeg times the # of voters

Posted by Andrwe Mitchell on 2003-07-25 04:57:05