That is a very simple mathematics question. - W8 c1 ^' g' q5.39.217.76Let x = Male, y = Female, z = Child5.39.217.76/ l( n8 O, j/ z s
6x + 3y + z/2 = 100 Formula 1* t! ~3 s) p: a3 C6 t" D& F* U
x + y + z = 100 Formula 2TVBNOW 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。+ T% B2 M/ h0 F& z6 n: a
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3! ^: g" c8 T( K5 _
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 2 J9 u9 J9 j! Q) W0 |公仔箱論壇Formula 4 can change into 11x + 5y = 100 Formula 5公仔箱論壇3 ~. n0 K1 n B, ]2 G4 X
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.; {) z$ K* {/ z4 [& t+ @
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 f+ a5 v; j; @8 b% j8 z% ?) 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,children0 n2 q) o3 V h1 x) {# J* R
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
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。7 Z. f/ c) {: i* P2 T( a4 B
11X must be 0 or multiple of 5 2 s4 |9 [1 S# e s: Q% @* W公仔箱論壇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' i5 W) U4 L& l2 h. ~0 W
5 male tvb now,tvbnow,bttvb. N# m* j' G- {; E* i+ F+ I4 b
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM