That is a very simple mathematics question.tvb now,tvbnow,bttvb5 O Y8 }; J# N% h
Let x = Male, y = Female, z = Child
; Z; B9 s; l1 g& ~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。6x + 3y + z/2 = 100 Formula 1
1 l% D. R# {+ |# m& ]2 }& x" uTVBNOW 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。x + y + z = 100 Formula 2
/ P: u9 ?) m# a& t; C$ X$ O5 r2 m% _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
7 Z4 `% f: W0 N! \8 j* [5.39.217.76Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇4 x# k3 a: h5 S: u( k
Formula 4 can change into 11x + 5y = 100 Formula 5
" P3 s: _# ^2 d* T0 \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。In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb1 T) _8 m1 k$ x( B( 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.公仔箱論壇- P% t, G: w9 v/ A7 O
Eventually, the answer is 20 female and 80 children and no male. |