That is a very simple mathematics question. 6 Y" h2 b9 ^4 G$ u+ q4 utvb now,tvbnow,bttvbLet x = Male, y = Female, z = Child ) j# n3 v" u5 j2 x/ ]6x + 3y + z/2 = 100 Formula 1 N: i! t3 o( m- E. vx + y + z = 100 Formula 25.39.217.76* }9 t1 j& E% K( G
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 & \9 x3 M' N1 J6 ~& I0 Ltvb now,tvbnow,bttvbSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 : M3 h& ~$ O) G3 p, @tvb now,tvbnow,bttvbFormula 4 can change into 11x + 5y = 100 Formula 55.39.217.760 G5 y' |3 r0 K% {; ^* p1 w
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want., p% X+ u2 D6 n
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. 3 M8 r0 D' O2 {. V: vtvb now,tvbnow,bttvbEventually, 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,children5.39.217.76/ C" B; I7 o# a# Z9 j, ?0 |$ n# B
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
tvb now,tvbnow,bttvb: I( s. a* ^ W, b
11X must be 0 or multiple of 5$ U* \$ y4 V% J% f9 }; e
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 childrentvb now,tvbnow,bttvb; }/ L+ d N- e ^0 I
5 male A0 S% J% v0 HTVBNOW 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 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
