That is a very simple mathematics question." P `* n+ B9 V
Let x = Male, y = Female, z = Child 6 B% e+ k5 b0 B9 @. F% g2 E" X6 x6x + 3y + z/2 = 100 Formula 1 Z, W% J9 M6 G3 \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。x + y + z = 100 Formula 2 % K2 {7 M F' F' A" utvb now,tvbnow,bttvbSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 5 j: k6 X9 X; f& k8 Q- Wtvb now,tvbnow,bttvbSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 ) l* e& Y$ }, P/ F% G0 K6 F6 l5.39.217.77Formula 4 can change into 11x + 5y = 100 Formula 5 8 ? s% x0 E7 QIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇+ C. C, n% x( [$ P: [0 X
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。8 J6 u7 g& g0 [1 @4 P, ~- R
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,children5.39.217.779 Y6 V/ X2 D3 |% ]* b4 B. u7 Y
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
2 y& [6 _3 }" L' v' Q2 N& zTVBNOW 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。11X must be 0 or multiple of 5" A6 A+ F6 C N8 ]0 E* W/ r2 ~
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM