That is a very simple mathematics question. ; \* v- @. \6 t! tLet x = Male, y = Female, z = Child ( p. |6 h0 p9 S: u& A5 u1 D6x + 3y + z/2 = 100 Formula 16 y3 C6 e5 _/ T
x + y + z = 100 Formula 2 6 a( f3 c- l0 n$ A7 q公仔箱論壇Simplify Formula 2 into z, we get z = 100 - x - y Formula 31 o, m" s. R: r; V4 |4 n* x
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4TVBNOW 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。2 R Z, `, ]% b
Formula 4 can change into 11x + 5y = 100 Formula 56 P; h3 d6 o3 F: B1 F/ z
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb/ A! e: M& U- E- F/ Y/ }
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( i! T J" l9 n- ~
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. |3 D- ~4 F8 H
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 " H5 U1 o A0 n W* u# Y* G公仔箱論壇11x + 5y = 100 Formula 5
5.39.217.76" W2 Y2 ]0 t0 T
11X must be 0 or multiple of 5 # E# p3 P/ R6 s' ~0 M1 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。that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 4 Q8 m) W" _0 y8 ?) ^5 male 5.39.217.765 n/ G' c( V X# j, u/ M
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
