That is a very simple mathematics question.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。4 S& v$ [- M6 m
Let x = Male, y = Female, z = Child5.39.217.77: M/ S. J; @! Q D7 G
6x + 3y + z/2 = 100 Formula 1 ' g, c; W! u/ r公仔箱論壇x + y + z = 100 Formula 2tvb now,tvbnow,bttvb+ G6 Q' v/ n$ n# N6 k
Simplify Formula 2 into z, we get z = 100 - x - y Formula 31 K" a! N+ Z1 W+ n
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4TVBNOW 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。6 u) G1 ^1 u. t) [5 I
Formula 4 can change into 11x + 5y = 100 Formula 5 : S0 R$ n, C9 p5 `: v8 MIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. , O P5 T1 e* F/ l$ QAnd 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 = 80.5.39.217.77$ [* O" N8 A' ^# s8 T, 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,children1 m3 B o) d5 N( N3 {8 y1 [; E5 w$ w
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
5.39.217.779 L* H0 R! u. ~1 e& i/ _
11X must be 0 or multiple of 55.39.217.77. Z4 s% r0 ~$ X1 q2 J
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children公仔箱論壇* k% D. d8 y+ { a6 a
5 male tvb now,tvbnow,bttvb5 w4 K6 m0 R( e6 Y5 y R, B2 c
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM