That is a very simple mathematics question. + [! f2 e: @( e: N1 D' p5.39.217.76Let x = Male, y = Female, z = Child ! v6 [- F' `5 M. q3 j/ L2 h6x + 3y + z/2 = 100 Formula 1公仔箱論壇3 c. H( I4 e! I0 |( j5 M# s
x + y + z = 100 Formula 2公仔箱論壇( X- R1 J! Z7 \! c* x
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3TVBNOW 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 F& R6 Y. R8 m
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇' N# i% { w1 b) ^
Formula 4 can change into 11x + 5y = 100 Formula 56 p& k0 N' @8 j9 s2 F0 z
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。0 `5 @; r4 X3 c- |
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 = 80.5.39.217.76' O5 _8 g4 T/ l. m+ _- |% u
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
5.39.217.76$ E, k0 W' y. O C: g
11X must be 0 or multiple of 55.39.217.76* L6 h" d3 U3 V
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 6 q6 F% g6 Y8 R* y6 s5 male $ e6 t3 s6 [0 K$ Q5.39.217.769 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
