That is a very simple mathematics question.5.39.217.77:8898+ E, X8 r# O# K( g. S, X
Let x = Male, y = Female, z = Child 0 g! N* u A3 Y* J9 q. c1 \6x + 3y + z/2 = 100 Formula 1 * E0 F3 R0 C* L- K) G2 K公仔箱論壇x + y + z = 100 Formula 2tvb now,tvbnow,bttvb$ H& T% E' Q1 M5 k V8 H
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb* e. L$ ]! G M ^* z. g- R3 s
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 / I1 K; O2 C# ?, A4 O& m% ?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。Formula 4 can change into 11x + 5y = 100 Formula 5 % [. g+ _: k! H7 T2 w( t$ S* 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。In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 8 x7 A u- p7 u% Gtvb now,tvbnow,bttvbAnd 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.公仔箱論壇/ h3 u. E0 I/ `* v% 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公仔箱論壇1 P6 ]. @# w s* e$ z
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
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11X must be 0 or multiple of 5 + J, [; k9 u8 `% _% Bthat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
