That is a very simple mathematics question.5.39.217.761 C* Q( d! D3 Q! ^; g; O
Let x = Male, y = Female, z = ChildTVBNOW 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。, S6 q$ x7 c/ {: k2 T$ ?6 u- X
6x + 3y + z/2 = 100 Formula 1公仔箱論壇0 X$ H! P1 o( E" J- L8 H
x + y + z = 100 Formula 2. e" q% i# N) }, M+ j* f3 `
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 0 K! h. m) P% k5 U5 D9 USub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4tvb now,tvbnow,bttvb0 A' d' [4 P0 f y
Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb4 A7 q5 N5 G. Z( F. T
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 7 R; m6 k9 `8 b; m- r: ^ iAnd 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. 8 Z5 D, T; P' |. q! h6 kEventually, 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 9 v+ y' j2 N4 P& z. k: }- t7 v公仔箱論壇0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
tvb now,tvbnow,bttvb2 S* [+ I8 V" d8 t
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。( L2 m- Z* L2 b* M
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children5.39.217.76; O9 ]/ ?: Z8 r4 E+ a; h
5 male . G) Q2 `2 n. V6 S9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
