That is a very simple mathematics question.! @# B" ^8 l" J* e$ X
Let x = Male, y = Female, z = Child公仔箱論壇7 h5 h) B/ e9 F$ O; k4 L- v6 X
6x + 3y + z/2 = 100 Formula 1 + \7 b# g/ V' i. oTVBNOW 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 25.39.217.768 N8 ~$ ?% r: A5 j% F: i
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇* c3 L! Q$ p4 O* O
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 % Y1 t$ o. i0 E4 n3 cFormula 4 can change into 11x + 5y = 100 Formula 5 : E: G. q; q; E# RIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇" j: F# z5 ~, h3 l
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 = 80.5.39.217.767 I* J: o! N' V
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
9 ?) ~+ s# a8 y* c9 B$ W9 F3 b9 M11X 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。* ]) L( @# j/ j( `2 J
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children' |/ `# T0 |0 ~8 M5 q
5 male / c6 Y P _; S, w" d& Ztvb now,tvbnow,bttvb9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM