That is a very simple mathematics question.5.39.217.76! E! ]" C/ y3 a, K4 x& m$ c
Let x = Male, y = Female, z = Child ! V& E; _3 }# C0 J2 m: N. atvb now,tvbnow,bttvb6x + 3y + z/2 = 100 Formula 1 # m2 N% o. I5 k" z" V! s* {+ G8 mx + y + z = 100 Formula 2/ G( {$ L8 d/ Y
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb3 B$ X& |. W3 n7 r+ R
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 9 c/ d4 I- R5 J' ]' T5.39.217.76Formula 4 can change into 11x + 5y = 100 Formula 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。! ?' T& ?3 _: _7 ]/ ^
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. / J. I9 v& M7 C9 s f, ]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. ( x0 L4 r9 G8 Y$ {: V* A7 S5.39.217.76Eventually, 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
& T; ?8 t' V. u; x! X* k: [" J11X must be 0 or multiple of 5tvb now,tvbnow,bttvb* h0 U( U+ x c% B* s0 c& W
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 childrentvb now,tvbnow,bttvb1 a' P' |) N' f) G# O2 E0 O4 o
5 male 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。4 v4 m. g; n8 L6 L a
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
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