That is a very simple mathematics question. 8 ^9 Q% s/ r6 y/ l5.39.217.76Let x = Male, y = Female, z = Child公仔箱論壇 c$ n: p, ^: n# K6 `* o
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb/ T2 L+ ?! ]; y6 _
x + y + z = 100 Formula 2 9 E* [( W- t% e+ otvb now,tvbnow,bttvbSimplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.76$ j' ?. _" w. i
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 9 i( d' p* o& a- y, [' p- @7 R4 _Formula 4 can change into 11x + 5y = 100 Formula 55.39.217.766 S, A+ e* W) H* A' H; n
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. " u N3 z2 D+ A5.39.217.76And 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. % a8 h T4 b* STVBNOW 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。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,children8 v! m3 `* u6 P# w
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
+ q) P. h$ [1 [, x% e4 {5 ]. Rtvb now,tvbnow,bttvb11X must be 0 or multiple of 5 # n6 b+ v$ s: Z2 n8 Mthat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children : z/ ^% z/ Z& P$ G" GTVBNOW 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。5 male tvb now,tvbnow,bttvb/ Q, D9 @0 u7 r% E* d
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
