That is a very simple mathematics question.8 q; K; a4 t7 t
Let x = Male, y = Female, z = Child Y n% h" e0 k% _9 C, x& r7 s5.39.217.766x + 3y + z/2 = 100 Formula 1 - s/ R& F, k+ 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。x + y + z = 100 Formula 2- y3 l3 m4 K8 o6 J n# u/ a+ J1 q
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3TVBNOW 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。: G( u, H0 A& O' ]5 c/ \, b
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 5 l+ h* x1 k7 z( [5.39.217.76Formula 4 can change into 11x + 5y = 100 Formula 5 # S9 o0 w) q1 |7 d! j% DIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 4 Z# `; A! x- c- t# y1 T公仔箱論壇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.- _% j4 r% a+ `$ f4 x" a
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,childrenTVBNOW 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 T9 Z; \. Y6 e2 K
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 5.39.217.76+ F P( e Q5 M c# C5 c4 V* D
11x + 5y = 100 Formula 5
% A% v/ G2 N3 d: k公仔箱論壇11X must be 0 or multiple of 5 / D" _& l0 R+ Sthat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 childrentvb now,tvbnow,bttvb' V5 C* Y" l6 T6 G, _. y
5 male 公仔箱論壇, E3 ]2 U. Z# d B" y
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM