That is a very simple mathematics question.
9 ]6 F( m# O. k* J- oTVBNOW 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
: g6 Z$ {' Y5 G5.39.217.776x + 3y + z/2 = 100 Formula 1
9 G. ]! @3 a+ \9 c: e+ f OTVBNOW 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。x + y + z = 100 Formula 2
; k+ ]$ U1 e6 _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。Simplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.77; y- I M+ J* S% z& g/ q
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
2 ] G; M9 w! X; k" PFormula 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。; e9 T7 P' C( Z; e" Z$ Y: a" s- p
In 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。, R7 y2 K, |9 o' @2 |2 }* q& g
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.
0 z1 L' Z: f( {公仔箱論壇Eventually, the answer is 20 female and 80 children and no male. |