That is a very simple mathematics question. ( `4 b. W5 g3 u$ e' L/ [5.39.217.76Let x = Male, y = Female, z = Child , i1 s) l V8 \6 @ E/ p公仔箱論壇6x + 3y + z/2 = 100 Formula 1 - f" L% D9 d& f7 k4 y& I& c' Lx + y + z = 100 Formula 2 $ C! ]) l# N+ L5 I gSimplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇, R9 |* p7 a# i4 ~% K/ ]! p1 z" O$ y
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 a4 }( d; X4 @5 _( R+ K2 {Formula 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。' Z, e7 G0 n9 [. k0 z* Q4 k; B
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. : }5 t' l" o2 C ?" x0 O, iTVBNOW 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。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. ( y- J7 [8 J2 Z! g+ Q" p! Ftvb now,tvbnow,bttvbEventually, 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
: o! q& n$ S4 u" j3 Q* R5.39.217.7611X 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。6 o3 d( c- G+ M2 J0 p8 X7 O' n
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children& l$ ]3 f1 G: u! K; \6 c& ^) W0 f
5 male ' w4 {5 W3 n8 f% R" `公仔箱論壇9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM