That is a very simple mathematics question.5.39.217.768 b: ?0 H; Q" R* A, E$ ^$ D
Let x = Male, y = Female, z = Child 8 B0 C, J' {5 Z5.39.217.766x + 3y + z/2 = 100 Formula 15.39.217.767 d% k' A& C$ M% r7 `' G. e, ?0 S. E @
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。0 e8 I( A5 G4 L7 g( l; K
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 1 f8 t, x. B7 E" @: [9 ctvb now,tvbnow,bttvbSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 r" q9 a) ~ sFormula 4 can change into 11x + 5y = 100 Formula 5 $ P U/ P9 R* e. o2 b/ x公仔箱論壇In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. L% Q/ J7 P+ ]! p# r* DAnd 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 j: z0 e: q7 G公仔箱論壇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
man,female,children公仔箱論壇) a2 c6 t% a4 Q; Y2 T0 n* c
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
& R6 g( |( l) B4 s; H- U& V11X must be 0 or multiple of 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。/ `- i0 h! q* C1 I: x: ^5 K! Y
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM