That is a very simple mathematics question.5.39.217.76( \* g( [7 u" b, s" o$ H
Let x = Male, y = Female, z = Child 8 ^' O- h) M E6x + 3y + z/2 = 100 Formula 1% g9 |0 C2 |7 |/ x2 q
x + y + z = 100 Formula 2 - G2 U9 |( A. g- I7 G; P) yTVBNOW 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公仔箱論壇2 W7 L+ d& [* Q1 I& A
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 2 A7 ^3 q( ~+ K0 d. r# R, x6 zFormula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb! C9 k8 z5 ~6 |. ]( M
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.8 m; 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. 3 c, B2 I* R3 o5 w& {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
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11X must be 0 or multiple of 5 $ g9 m1 f9 ~: \0 kTVBNOW 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。that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children. [( Y+ D( v ]/ O( N8 B
5 male , Q3 r* w, o2 D% V/ r5.39.217.769 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
