That is a very simple mathematics question. ' C5 f. u# {6 @; a/ hLet x = Male, y = Female, z = Child5.39.217.76* d |! V) s3 Y. S7 o
6x + 3y + z/2 = 100 Formula 1 ' m' d" D0 Y; N* {: ?& D# i* g Xx + y + z = 100 Formula 25.39.217.76% y6 _* r p- m! P
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇7 C* Q- Z/ p4 m3 |) Q3 ]
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 . E, A; l6 |: F1 Y. a# utvb now,tvbnow,bttvbFormula 4 can change into 11x + 5y = 100 Formula 5 5 a5 t# L( T7 z/ LIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. : k5 e3 Z$ ^) l& {: b/ x& E _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.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。7 R0 {. c9 N: |' ]$ h
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
+ Y/ y+ _0 F8 w1 m* ~, ~. ~& ~
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。5 G( Q( S4 ^7 w9 ?
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children ( W. I$ E9 X% I! z' o& T( o公仔箱論壇5 male & u% g4 G @- [5.39.217.769 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
