That is a very simple mathematics question. g3 P; s1 k& O; uTVBNOW 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。Let x = Male, y = Female, z = Child % s! c! n% n7 ~0 q公仔箱論壇6x + 3y + z/2 = 100 Formula 1TVBNOW 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。! `' Z6 e. a3 G D, T. {7 o) ?6 E$ F
x + y + z = 100 Formula 2 3 r5 _7 Y4 L8 f5.39.217.77Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb# k$ o: i4 j. I J+ |
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4) \* T: E2 P( Y5 k0 |
Formula 4 can change into 11x + 5y = 100 Formula 5" c9 p8 Q; T8 F0 [3 F& k
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. $ m* @" ]( O/ KAnd 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. ( m/ Z" Y Y5 t0 p wTVBNOW 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,childrentvb now,tvbnow,bttvb% W2 l- z- M$ ]6 t9 n. o
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
公仔箱論壇 j0 v% ]& Y; `. o. e
11X must be 0 or multiple of 5tvb now,tvbnow,bttvb' l1 C, D- z1 d% }
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children公仔箱論壇* \7 p0 f0 Q7 ?! s
5 male 5.39.217.77; J7 `4 l; P$ y) q2 B3 F, S
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM