That is a very simple mathematics question. 8 V z, @2 i% T6 Z, F( K( x8 GLet x = Male, y = Female, z = Child1 g1 _# C I- p3 o; ^
6x + 3y + z/2 = 100 Formula 1; A+ V# [( z* Z6 D1 O4 b
x + y + z = 100 Formula 2+ u: p+ z9 s, O% K2 { R
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3TVBNOW 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。! ^" E: O8 @8 A; k3 p3 d$ E% {
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇$ B( L% f" U/ v! \) D( I" ~
Formula 4 can change into 11x + 5y = 100 Formula 5% `; D( [: e& `1 y; L, }6 |
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. - N6 E. Z: }- d+ K% L( m5 w4 AAnd 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. , J \7 B: u( A' Y# T) r. v2 BEventually, 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,children5.39.217.77 M; C" T2 N- @$ V8 N4 N4 R% d
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
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11X must be 0 or multiple of 5 " U7 y7 N9 Q/ dthat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children i! k, ]9 |2 ]: y" h+ X5 male ) c# C& [6 I, P. }% ?% }- T$ s M
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
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