That is a very simple mathematics question.
, ~7 |9 Q0 Y9 {9 }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。Let x = Male, y = Female, z = Child公仔箱論壇6 t2 J- r! ?* E5 m
6x + 3y + z/2 = 100 Formula 1
; t& n2 F2 u) v( v( q% v) F3 m4 ktvb now,tvbnow,bttvbx + y + z = 100 Formula 2
1 G3 {, y. Q+ g' {4 n* h7 Ewww2.tvboxnow.comSimplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇! H' D0 t6 h1 s( ~% K) K! d
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
, i7 S/ N& h0 Y: r0 p- E( m) nFormula 4 can change into 11x + 5y = 100 Formula 5
0 k* U! M+ h- _1 ]- j8 d5 Y) L0 ?6 y3 N tTVBNOW 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.
9 I$ u# y( w& f8 P( ~公仔箱論壇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.
% H0 h0 @- o$ ~7 R0 o" Vwww2.tvboxnow.comEventually, the answer is 20 female and 80 children and no male. |