That is a very simple mathematics question.2 t/ e8 R j2 l! Z+ Z( U7 l
Let x = Male, y = Female, z = Child ( D8 B; n8 u) s0 w# N4 aTVBNOW 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 D7 Z4 y" a+ }0 F/ J/ z, w
x + y + z = 100 Formula 2+ N# E- |0 i3 |% P- w
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 - p, {9 T* x& Y, W; S vSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇3 D- y: N: R/ t/ n& S- F# p( a- Y
Formula 4 can change into 11x + 5y = 100 Formula 5 7 |$ h4 Y; S" | Z/ S" [8 E8 o' QIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇9 G+ Z6 |# B6 n& a* r& P9 l8 ]
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. 3 d8 M( ?, ]+ n( E" x6 VTVBNOW 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,children7 }5 d) \6 @0 Y/ \0 h$ j8 y
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 1 p. v" o! r' z5.39.217.7611x + 5y = 100 Formula 5
8 y9 @ P# m% K& a# @9 i* {3 @2 KTVBNOW 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。11X must be 0 or multiple of 53 G. Y9 A4 x% i. A4 T
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 8 P6 a) I# v" ~5 male h, W" u) j* U- ?, `* v
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
