That is a very simple mathematics question.
K( g7 h! o8 P$ }6 M, A7 r; ^' h* `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。Let x = Male, y = Female, z = Child5.39.217.77( C, \! X: u% d9 U
6x + 3y + z/2 = 100 Formula 1
' q: J, P" Y/ Ox + y + z = 100 Formula 25.39.217.77: o+ n4 Q5 f h/ s9 E' a+ a5 a
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
# Z# S1 i5 t+ A1 k6 GTVBNOW 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。Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4TVBNOW 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 p5 g, g4 a( W4 a
Formula 4 can change into 11x + 5y = 100 Formula 5
" h6 o# s/ Z6 q9 M! }6 ^公仔箱論壇In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb' V `: R* E* X: m3 E1 V
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.
1 ]" t* ~$ b) B6 }Eventually, the answer is 20 female and 80 children and no male. |