That is a very simple mathematics question. 7 U/ A7 Z6 O5 V, J- s公仔箱論壇Let x = Male, y = Female, z = ChildTVBNOW 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。 G& |9 n& B7 M+ O
6x + 3y + z/2 = 100 Formula 1 ! ]: U( a5 L5 C H+ D dtvb now,tvbnow,bttvbx + y + z = 100 Formula 2 , U9 ^( _$ I2 b! U- ]1 MTVBNOW 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。Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 $ X( B7 z; q% G, w7 |/ |Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 " O: c! d ?. zFormula 4 can change into 11x + 5y = 100 Formula 55.39.217.76$ I7 b* G: t* L8 P1 {8 `3 o% f/ M
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. " B* D H- {0 p- ?! K+ D. _2 E) LAnd 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 = 80.5.39.217.76; P0 ?; n+ J% P: k$ O2 ~
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
