That is a very simple mathematics question. 3 D2 Q& N6 B$ Q& w' A/ _Let x = Male, y = Female, z = Child: Q! M7 Z3 G. S$ r( w0 O2 T* V! j* t* t
6x + 3y + z/2 = 100 Formula 1 ! m( m# T9 R3 B* Rx + y + z = 100 Formula 25.39.217.764 l5 V9 Y6 ~! I; y! k+ ~
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 / ?0 M m# O! d$ f* i公仔箱論壇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。; U3 k$ Y2 a! w* Q: u1 D
Formula 4 can change into 11x + 5y = 100 Formula 5 . u3 u- H% X) p- l6 Q5 W5.39.217.76In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. {& O4 G* s$ K' XAnd 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.& U" R/ @9 t* q9 Y9 y( w# D- x
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,childrenTVBNOW 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。" ?* S/ T5 h: b' R, N
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
8 ~+ F7 W7 Z e. g2 \+ ?5.39.217.7611X must be 0 or multiple of 5 5 T# U* r6 E; X- Q: K; W l5 pTVBNOW 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。that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 3 P- `0 A% S1 ?3 l0 b W/ q) r! h0 z5 male 5.39.217.76( p9 l7 f3 E* n% U
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM