That is a very simple mathematics question.5.39.217.764 O/ J- n. f! g7 t$ ]' a& ]( q8 n
Let x = Male, y = Female, z = Child ' ^& L4 G5 m' k% \9 dTVBNOW 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 5 l4 p9 @% j$ q 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。x + y + z = 100 Formula 2 7 T1 D5 f, J) z# L7 a8 X# D: {5.39.217.76Simplify Formula 2 into z, we get z = 100 - x - y Formula 3( v" s: t9 m" ~7 s+ f
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 , N. ]% T6 p2 j# v* }, ]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。Formula 4 can change into 11x + 5y = 100 Formula 5 # w& a9 Z9 y2 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。In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇6 D8 X7 X6 _6 ]+ a- ^) h
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/ c3 V! V" C! m$ m5 W
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,children5.39.217.76# A6 j& x. S; ^1 O0 J9 e
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
+ g% z- ?( ]* \/ @& ]& x0 |' Mtvb now,tvbnow,bttvb11X must be 0 or multiple of 5tvb now,tvbnow,bttvb( X0 D, q% ? N& m
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children & Y" F, S) Z" p" [/ P3 _5.39.217.765 male 2 B/ B' A% B2 p, h# V6 G# d9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM