http://threeacts.mrmeyer.com/25billionapps/

Our class was trying to find when the apple app store would hit 25 billion apps downloaded. The average downloads a minute was 34200. On Friday Feb. 24 2012 the downloads were at 24,658,678,549 at 6:32. So I took 25 billion and subtracted it by 24,658,678,549 and got 341,321,451.  Then I divided 341,321,451 by 34200 and got 9980.1 then divide that by 60 because there are sixty minutes in a day and got 166.3. After that I divided it by 24 because their are 24 hours in a day and it was 6.9 so I rounded to 7 and the contest should end on Friday March 2 2012 at 5:20 if the download stay at the same rate.