That is a very simple mathematics question.
* H- `: S8 |. p' O6 C6 rTVBNOW 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。Let x = Male, y = Female, z = Child
) r7 U0 { {9 y8 D3 V+ vtvb now,tvbnow,bttvb6x + 3y + z/2 = 100 Formula 1
5 h4 B' r" A0 q3 C; W+ z9 ax + y + z = 100 Formula 2
( M/ ^) S* G/ V* CSimplify Formula 2 into z, we get z = 100 - x - y Formula 3
0 v/ F; w2 Y' A: [) p3 N. ftvb now,tvbnow,bttvbSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇- Y# B( }% P; @+ b7 R8 \3 b: Q
Formula 4 can change into 11x + 5y = 100 Formula 5
' J- ]. W9 w; T* C5 b! ?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。In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.www2.tvboxnow.com, ]( X* |; G3 B C6 }7 n* j
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.
; P! ?" J% a, H# P* d. A9 o7 C公仔箱論壇Eventually, the answer is 20 female and 80 children and no male. |