That is a very simple mathematics question. 6 v5 o9 k# p' A6 b* i$ b公仔箱論壇Let x = Male, y = Female, z = ChildTVBNOW 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。9 v3 t4 c* h. d1 j( z' ?
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb8 P5 V6 T# \4 _8 @ k2 w
x + y + z = 100 Formula 2tvb now,tvbnow,bttvb; y" W2 ?% z: K5 W! Q7 Y
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 4 U, k/ G. r' t$ N% t& i6 L8 V; {; o5 MTVBNOW 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。Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇9 N6 p3 r# J$ ]# e
Formula 4 can change into 11x + 5y = 100 Formula 5 & i5 x' M4 t( w, {3 h公仔箱論壇In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. - _8 ?! n" B0 vAnd 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. ( O1 f& r4 t5 D" F" VEventually, 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,children5.39.217.771 E+ Y. N" f0 ]: Q
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
5.39.217.77- w4 C) P3 A( e# G
11X must be 0 or multiple of 5TVBNOW 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 H8 ~) u" @) c4 _, c
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children / c2 @3 W8 v; @$ m. P$ M, O) r5.39.217.775 male 6 ~1 H( L/ K4 z5 C% x2 _9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM