That is a very simple mathematics question. 5 Q5 b/ k6 o- o4 k- m- fTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。Let x = Male, y = Female, z = Child4 h1 D1 w7 i/ V, z4 _
6x + 3y + z/2 = 100 Formula 1TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。* T# s/ \& X" F8 k: `% y
x + y + z = 100 Formula 2 0 R( X: K- F, sSimplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb. y, E q. z8 h' A, D# M. I6 E# k$ Q- `
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。3 U" y: w% Z9 v. l3 u
Formula 4 can change into 11x + 5y = 100 Formula 5 ; W$ H" p3 e) B5.39.217.76In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.* s+ y$ z6 K7 n, s
And between 0 and 9, only 0 can give me a single number of y. So, x has to be 0 and y have to be 20. Then put x and y back to formula 1, we get z = 80.- \' s6 o6 H% | X
Eventually, the answer is 20 female and 80 children and no male.作者: alan1234 時間: 2007-10-14 12:19 AM 標題: two answers
man,female,children 5 N! N1 H K. X9 [1 q! p6 itvb now,tvbnow,bttvb0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
" m' V; F" p# V0 C6 [6 D' ttvb now,tvbnow,bttvb11X must be 0 or multiple of 5 * G( e; P' T8 p; Ithat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM