twinsdragon

That is a very simple mathematics question.
+ u1 O7 ~7 Q2 T* Q3 K* d& eLet x = Male, y = Female, z = ChildTVBNOW 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。3 n% H( _. I7 L6 A' U/ }3 w
6x + 3y + z/2 = 100   Formula 1
* e8 H9 B" }! ?1 x; r/ Vx + y + z = 100    Formula 2
! N, L# ?6 a% Y. [( T; [" P公仔箱論壇Simplify Formula 2 into z, we get z = 100 - x - y Formula 39 g" N5 L& c0 a/ S, ]
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
3 X4 Q! _& D3 L" sFormula 4 can change into 11x + 5y = 100 Formula 5
; r) \2 D& b. s5.39.217.77:8898In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
3 {) H$ T9 H2 i% @. b7 Q  A; PTVBNOW 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.公仔箱論壇  G$ k- R  m1 ^$ ]- `
Eventually, the answer is 20 female and 80 children and no male.