That is a very simple mathematics question.
! j5 W- Q' l8 `! l/ W# t A公仔箱論壇Let x = Male, y = Female, z = Child
' @4 [0 k0 N; t+ @" ios.tvboxnow.com6x + 3y + z/2 = 100 Formula 1os.tvboxnow.com, _: L, D" X, j% B
x + y + z = 100 Formula 2tvb now,tvbnow,bttvb% m6 m. p3 P! o. _9 D9 [
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
' {2 H3 A$ i. [6 |! ^ {Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
; t+ v" i% ]# `: A- [. x$ Ktvb now,tvbnow,bttvbFormula 4 can change into 11x + 5y = 100 Formula 5
: h0 l' b1 w R6 e" i/ S3 LIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.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。3 W) J6 t. s1 @+ 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.
: s1 u5 t, I: {( r2 w公仔箱論壇Eventually, the answer is 20 female and 80 children and no male. |