That is a very simple mathematics question. 8 h% s! A$ f- t% w% ptvb now,tvbnow,bttvbLet x = Male, y = Female, z = Child . t8 m+ G# {% p0 Q6x + 3y + z/2 = 100 Formula 1 2 P. A7 S( ~- u0 j) {0 C5 }公仔箱論壇x + y + z = 100 Formula 2tvb now,tvbnow,bttvb9 K. k- K" f o
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 . B+ a$ H) T$ D3 t; h' w6 K OSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 7 C! D; n, F9 Z% Z: z# S' A2 x! x( RTVBNOW 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。Formula 4 can change into 11x + 5y = 100 Formula 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。0 ~9 R5 F: G3 Z. ~1 p2 B
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want., B9 ^; y' X) E, a! g
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. : J- W7 U2 H6 T' h( [ d0 ^8 d r& ~5.39.217.77Eventually, 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
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11X must be 0 or multiple of 55.39.217.77- N7 o/ \* @% I7 j& @
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children ( o2 x9 |8 v& @5 w: g. _5 male + o1 @$ V. J% _# Q' ~ Z9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM