That is a very simple mathematics question.tvb now,tvbnow,bttvb7 U( A& O3 T# N+ _3 N. w; E
Let x = Male, y = Female, z = Child 8 X4 {2 j7 X, c6 g7 ATVBNOW 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。6x + 3y + z/2 = 100 Formula 1. {6 k8 h# _& c( K
x + y + z = 100 Formula 2 1 d' a" s( G+ v g$ E& @' L公仔箱論壇Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 + C- U/ j1 d3 R) L* BSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 W4 Y5 I5 N# d. y$ }
Formula 4 can change into 11x + 5y = 100 Formula 5TVBNOW 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。' c7 |. ]* L; u7 q' s
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb0 M' y. @$ h! h& t
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. $ S( a9 G* [, |tvb now,tvbnow,bttvbEventually, 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 ! x( }1 `; ~, }6 ?; e* R8 y. nTVBNOW 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。0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM