: Q B' P. W0 B; m- F2 k4 k7 _5.39.217.76答案30號公佈公仔箱論壇2 m2 F7 s4 P j6 C; l
tvb now,tvbnow,bttvb& X6 u+ j7 T4 P! a
[ 本帖最後由 1/5 於 2007-10-13 05:10 PM 編輯 ]作者: twinsdragon 時間: 2007-10-13 05:40 PM
That is a very simple mathematics question.5.39.217.76# E' Z$ R' |6 ]; E- p- v5 h/ `7 n
Let x = Male, y = Female, z = Child+ g, @/ N# U$ V/ W1 G2 D1 ]9 c
6x + 3y + z/2 = 100 Formula 13 O! i* B; K0 C; i# p
x + y + z = 100 Formula 25.39.217.76& Q% t1 Z0 h% E/ A( i
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3) c, ?2 v! z: T) K. B8 _
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4$ O# z }9 A5 S
Formula 4 can change into 11x + 5y = 100 Formula 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。; R4 f2 V1 B& k4 i
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. ) \& i" i& Q6 cTVBNOW 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。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. % N8 ~7 h; [6 RTVBNOW 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,children 9 e% M s" D2 j% b) L8 N公仔箱論壇0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
