Okay, this might be a little long but here we go.First of all, any numbers that I get will be from nexgenwars.com, and any release dates will be from gamefas.comLets start by finding out the average daily sales for each system. I will use the equation:Systems sold------------------------ = Average salesNumber of DaysAfter ReleaseXbox 360:Sales: 10,456,473Days after Release: 443 (As of Feb. 8 2007)10,456,473----------------- = 23604443So, each day, an average of 23604 Xbox 360s are sold.Wii:Sales: 4,454,400Days after Release: 81 (As of Feb. 8 2007)4,454,400--------------- = 5499381So, each day and average of 54993 Nintendo Wiis are sold.Now, I am going to figure out on what day each of the sales will cross.y = mx + by = Total Salesm = systems soldx = daysb = total sales so farWiiy = mx + by = 54993x + 4,454,400Xbox 360y = mx + by = 23604x + 10,456,473So, from these statements, we can figure out in how many days the sales will be equal.Since y = 54993x + 4,454,400 and y = 23604x + 10,456,473 we can say that:54993x + 4,454,400 = 23604x + 10,456,473Now, we solve for "x":54933x + 4,454,400 - 4,454,400 = 23604x + 10,456,473 - 4,454,40054933x = 23604x + 6,002,07354933x - 23604x = 23604x + 6,002,073 - 23604x31329x = 6,002,07331329x/31329 = 6,002,073/31329x = 192So, in 192 days from Feb. 8 2007, the Wii sales will surpas the 360's sales. That date is August 19th 2007.Thanks for reading this, if you have found any mistakes please report them.
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