That is a very simple mathematics question.tvb now,tvbnow,bttvb) E- R! G2 [" h
Let x = Male, y = Female, z = Child5.39.217.763 o; I) [2 j# R1 A- y2 I8 Q$ `: x- e
6x + 3y + z/2 = 100 Formula 1公仔箱論壇5 A8 }/ L' a t3 \
x + y + z = 100 Formula 2 ' D; ?+ Z. R7 s7 U; Z4 \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。Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 2 O; C8 E, C; g8 o0 k9 C2 q5.39.217.76Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇# X/ o; q, x9 `2 P/ u: Y5 B
Formula 4 can change into 11x + 5y = 100 Formula 5 5 X- _ ^+ G% I1 ]9 I. eIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇! f6 ?7 d3 z/ k7 v2 R# D
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.tvb now,tvbnow,bttvb' c& r# ^% k* L$ r& T- J- G, T& P
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,childrentvb now,tvbnow,bttvb3 O% E& I6 u! p- [/ K
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
) n$ [ t% v/ L& F' h: h: V! @tvb now,tvbnow,bttvb11X must be 0 or multiple of 55.39.217.76- e( F+ h& M3 f7 }* e
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children # i, r$ w' K) ~7 B! J. i* T% m5 male * H3 R9 W$ a3 c/ P9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM