That is a very simple mathematics question.
% g! f& p; r, wtvb now,tvbnow,bttvbLet 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。8 p* h1 j. |5 U6 j; C2 H
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb. e2 M* a% ^& O
x + y + z = 100 Formula 2TVBNOW 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。* d! N: j/ \9 D0 I3 n# N
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
+ ]' q. O) R1 L. k5 vSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4www3.tvboxnow.com2 U4 k' ^' o. S
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。2 ?3 d. Z: b/ i* R" D% ]! I5 D& y( \
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
+ D" }8 y: A h; M0 r' W9 ~tvb now,tvbnow,bttvbAnd 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.
+ \8 ~: q5 o4 b4 a+ H& X& Y& owww3.tvboxnow.comEventually, the answer is 20 female and 80 children and no male. |