That is a very simple mathematics question. 1 x, G( v$ i* \% O1 p; @, Y5 dTVBNOW 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 ' l" A( y9 l7 f% t5.39.217.766x + 3y + z/2 = 100 Formula 1 3 g; P& t, J9 Mtvb now,tvbnow,bttvbx + y + z = 100 Formula 2 1 w( m2 d4 E% m2 t* C, ^Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 7 y% e) P1 T5 v" S5 b9 |Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 47 H1 z( e* i) w$ z! |0 R
Formula 4 can change into 11x + 5y = 100 Formula 5 ' w4 ?) o* e0 }' }5 L QIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.2 D7 f! F4 n; k
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.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。* r" M, G" ^7 N
Eventually, the answer is 20 female and 80 children and no male.作者: alan1234 時間: 2007-10-14 12:19 AM 標題: two answers
4 t4 J: G7 w f( g& U7 a, }公仔箱論壇11X must be 0 or multiple of 5 ! h: u7 W: q- Q5.39.217.76that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children1 [& l+ X& R% q$ e# F8 B
5 male % E1 R6 P- m9 r. i4 q4 Ltvb now,tvbnow,bttvb9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM