That is a very simple mathematics question.* e: v; _# X. K$ _
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。3 e( c& B: q" f8 |: E
6x + 3y + z/2 = 100 Formula 15.39.217.762 X7 D* ~( Z5 m1 O
x + y + z = 100 Formula 2TVBNOW 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。- ]2 i$ Y2 K, s) ]) [- \; v
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 Q* \- k, b/ F$ v6 w* ~
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 7 t- P! k2 R. g. r: s3 L1 l9 @3 m, G公仔箱論壇Formula 4 can change into 11x + 5y = 100 Formula 5 0 x) }2 R5 F4 c8 L l+ r% SIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. B6 c- n# m9 A2 Y: KAnd 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. ; W3 F& A, v1 u: H公仔箱論壇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,children7 S: L8 O, O0 D4 a
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 - Y# X0 S8 S5 f+ w4 Z. t
11x + 5y = 100 Formula 5
4 c9 K* o# [. h% E+ K; U" }1 \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。11X must be 0 or multiple of 5 7 X3 u: F4 f4 t* R2 Cthat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
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