That is a very simple mathematics question.
! F1 Y) b7 f6 ^0 `! Ttvb now,tvbnow,bttvbLet x = Male, y = Female, z = Child公仔箱論壇6 A/ x$ X1 e# i. i- ?
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb. s* Z. L0 C# D% O: A3 r; n; s9 l
x + y + z = 100 Formula 2
6 U; C+ H% q( FSimplify Formula 2 into z, we get z = 100 - x - y Formula 3
- S5 `! o* f9 j2 v h: X6 Y( E公仔箱論壇Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
! w7 ~" n3 }6 [; E5 Q7 p' 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。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。! C# X& U5 `) C9 |$ s
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
7 e( B3 Q% x& C2 r! Z, q公仔箱論壇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.- f8 `" T* f" ]/ c5 D. Z# r8 i
Eventually, the answer is 20 female and 80 children and no male. |