That is a very simple mathematics question. 1 H) E" k" F p. g' l P4 O7 G0 ITVBNOW 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 = Child 3 p+ v5 F2 f7 y, V' rtvb now,tvbnow,bttvb6x + 3y + z/2 = 100 Formula 15.39.217.769 b& M! V8 H) T( k7 z7 T+ R
x + y + z = 100 Formula 25 z* z/ }& d5 R
Simplify Formula 2 into z, we get z = 100 - x - y Formula 38 {8 L( z0 X% i+ _, U
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 45.39.217.76( N& ^) q5 c. a# v- ]5 D5 K+ @
Formula 4 can change into 11x + 5y = 100 Formula 5公仔箱論壇; u, j9 D$ L5 ]8 ]' s
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.5.39.217.763 H7 g2 `! K, n' 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. ( b! O7 g3 c6 D+ Z, _TVBNOW 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。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
原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 ; f, `$ f* u: k W2 a) y5.39.217.7611x + 5y = 100 Formula 5
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11X must be 0 or multiple of 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。+ R8 j8 U# k' P$ @- x+ P) S1 Q
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 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。+ ^9 C- N( F0 _' S. Y1 s, z. x& J
5 male " k% H# G! i n, I2 m' F1 etvb now,tvbnow,bttvb9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
