That is a very simple mathematics question.os.tvboxnow.com3 |3 \3 r. ?! _' _! v7 G4 w5 x
Let x = Male, y = Female, z = Child
8 y# w- J+ R# Z# \" B4 F1 x& Ptvb now,tvbnow,bttvb6x + 3y + z/2 = 100 Formula 1公仔箱論壇3 ?2 r' y7 L- u
x + y + z = 100 Formula 2 r: K0 ?2 |9 n/ O% W8 l
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3os.tvboxnow.com0 g- B- A; t2 a. @1 M2 A. j# S- `
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。4 i Z7 ^% k+ x/ @. d( y( w& U. J! o
Formula 4 can change into 11x + 5y = 100 Formula 53 P! w0 p% O/ S c# ], S! Q
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
6 y6 R$ R1 k% cTVBNOW 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.
* D- c& L: b4 {; m1 R% |os.tvboxnow.comEventually, the answer is 20 female and 80 children and no male. |