That is a very simple mathematics question.公仔箱論壇9 B ]7 ]+ q7 n+ _1 @
Let x = Male, y = Female, z = Child `& w! r- O1 P& L- s0 O1 V4 O公仔箱論壇6x + 3y + z/2 = 100 Formula 15.39.217.76( r/ S$ D! D" R8 P: G
x + y + z = 100 Formula 2 0 c# Z) E3 _! S3 hSimplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb, B) r: Q0 S) x" e P. d# s
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 45.39.217.762 M6 u! e" j, H d3 y9 h" R
Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb, N* b c, H, N' z
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.5.39.217.76# f" I3 |, G' M: e, 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.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。$ E4 }* h' |1 m6 e7 F9 p' y
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,children: n7 _7 D( ^+ ?2 d% g
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
! u9 v" |$ X- w7 P! N公仔箱論壇11X must be 0 or multiple of 5 : W0 t. H$ U" ^ c. W" h+ m( l5 @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。that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children公仔箱論壇1 Y+ I$ x7 r7 H% w C; y3 M
5 male 4 g- D. Y; }( J0 wTVBNOW 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。9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM