That is a very simple mathematics question.
& u0 F4 @6 r- X5 T: ]Let 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。+ i3 E) _, { z' C
6x + 3y + z/2 = 100 Formula 1公仔箱論壇' A+ w! d7 ^8 y! D+ g
x + y + z = 100 Formula 2tvb now,tvbnow,bttvb. G q; O, t# T' l8 Z2 Z
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
; I- K0 j- M# R9 Stvb now,tvbnow,bttvbSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
, |4 P0 G. \6 }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。: ^) H2 F1 \/ B4 j
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb, {0 b3 ~/ s$ D) y+ W
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. s: k# ?( E$ u$ Y
Eventually, the answer is 20 female and 80 children and no male. |