That is a very simple mathematics question. ( U( w1 g" X2 W- i! YLet x = Male, y = Female, z = Child 7 U' ]4 Z$ p$ LTVBNOW 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。6x + 3y + z/2 = 100 Formula 1( p1 P: W4 p$ n" B1 n1 I' ?( Q
x + y + z = 100 Formula 25.39.217.76# g2 C$ E! j/ [# W8 C
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3: z& n$ Z6 {: T% E- Y$ ]" k; `1 `
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 45.39.217.76% ?" I* U/ |- N6 ^2 x! l
Formula 4 can change into 11x + 5y = 100 Formula 5 : s9 Q9 o6 \0 G5.39.217.76In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇6 }: _* p9 R5 `! |% @& }; {' M* |( O
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 = 80.4 a2 |4 v' [# ^5 U) e
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0 C; R3 a. _( R2 \
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
* k: H3 H" ^+ [1 U6 [9 P公仔箱論壇11X must be 0 or multiple of 53 o. H* w3 j; p, j3 S9 B9 H3 e
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children ; g- K- h0 k# i& |9 l5 male # R) u% e- P$ f: t/ X! H
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM