That is a very simple mathematics question. / Z# F1 k% N4 O' LTVBNOW 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 : r7 t" O; l ~/ z* k4 wTVBNOW 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 d/ |. |5 A% X9 m' Y0 nx + y + z = 100 Formula 2 6 Z2 d8 ?0 u1 V+ gTVBNOW 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。Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 0 r# j* B, A5 b h; r7 @公仔箱論壇Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 6 X3 r" o& }2 n! s# x公仔箱論壇Formula 4 can change into 11x + 5y = 100 Formula 5公仔箱論壇/ g. w/ A% z9 D, ^+ i/ X2 v4 Z
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇2 H4 F5 L5 b$ g- s/ h; ~% U
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. 5 u4 b- s+ |4 R6 j/ i. D/ }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
: s; }. G f1 `: T公仔箱論壇11X must be 0 or multiple of 5 - E2 Y% K. v- I& Jtvb now,tvbnow,bttvbthat 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。( y' U/ N* g" g3 ~' i) M. `% ]
5 male 5.39.217.76" U" ?$ e: _1 f4 Z
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
公仔箱論壇, T( ~# M" J9 E( N3 d
