That is a very simple mathematics question. 7 f% \2 \, {& Y* ^* i# c& z1 nTVBNOW 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 = Childtvb now,tvbnow,bttvb5 B$ @) B$ d" x Q `8 C
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。 e% M; d7 L; A; S2 G6 O
x + y + z = 100 Formula 2 3 ]- w% f& f. y) E+ ^公仔箱論壇Simplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.76& k: s0 n) o( ]& Y& K6 T
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 45.39.217.76+ j: e8 I7 e. B6 K3 [8 k& O. T6 \
Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb' k) U1 y; {. W
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.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。 g2 K3 v5 S0 B7 q$ J' G
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. : z2 N" b3 u3 U8 uEventually, 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,children: L. C3 {0 u- i! V0 y( k) X+ n! g
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
/ j/ Z: C- Z, P" U: p5 p5.39.217.7611X must be 0 or multiple of 5 5 V0 C% S" \8 N* Ltvb now,tvbnow,bttvbthat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 4 P6 {6 e9 M9 K, i" ctvb now,tvbnow,bttvb5 male 1 y. o4 C- G7 C( `9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM