That is a very simple mathematics question. & P% s" n6 H S* j4 g* s5 STVBNOW 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。Let x = Male, y = Female, z = Child Q9 S1 Q5 X" j" X- O E) o4 `& X6x + 3y + z/2 = 100 Formula 1公仔箱論壇2 f* `6 H& E1 F% a9 H
x + y + z = 100 Formula 2公仔箱論壇% @9 U# S& b$ |2 r U/ e' c+ i! t# {
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb# G6 O; _/ {0 ]: s' ~% a
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 48 t& C& h' t& ]3 ~+ F: a% X6 M
Formula 4 can change into 11x + 5y = 100 Formula 5* P, a+ J. r; a( c( H4 H* S) z8 u% I
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.5.39.217.77# R( Z1 R7 a: W1 Q8 Y. D1 O
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。' w/ h" c/ W5 e! @; w# i1 f
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
man,female,children5.39.217.772 V! t# l' Q' C4 ]
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 5 Z* P& u8 x# k
11x + 5y = 100 Formula 5
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11X must be 0 or multiple of 5 ) k# j1 q: E- a) M: m9 ?$ ithat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
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