That is a very simple mathematics question. ' \. n( M( Q& k' }7 W& vLet x = Male, y = Female, z = Childtvb now,tvbnow,bttvb. |, I( g. R* Z8 o+ B8 e! m, ^. _0 N! H
6x + 3y + z/2 = 100 Formula 1www3.tvboxnow.com, C8 M0 \3 ^+ B! _# N( S
x + y + z = 100 Formula 2+ e2 E P3 C4 U. l
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 L! t7 B" d, F/ G* eSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 49 t3 t8 N8 R* {
Formula 4 can change into 11x + 5y = 100 Formula 5 " Z" W! A, j1 ?. l9 K6 x/ CTVBNOW 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.www3.tvboxnow.com: s' v2 \( q" x/ m; I
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.公仔箱論壇) n: Z8 n* K' \
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,children 7 E& o) u. m" O' G$ |2 b0 \4 Z公仔箱論壇0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 公仔箱論壇: Y, H0 q$ ], b
11x + 5y = 100 Formula 5
公仔箱論壇% b# o- [1 n) Y, E8 {" {
11X must be 0 or multiple of 5% l% _0 {/ M% x3 Y+ X5 V/ v1 l; K
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
公仔箱論壇: Y, H0 q$ ], b
