That is a very simple mathematics question. 2 | X5 M9 n" `( ]2 rLet x = Male, y = Female, z = Child ; ?' d6 a8 f' i7 F, }: E5.39.217.766x + 3y + z/2 = 100 Formula 1 1 K, S2 h6 I2 Ex + y + z = 100 Formula 2 % Z% G4 z9 S. a2 E7 uSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 # _! I1 ]/ I3 M8 i: k: [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。Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 " \( T! {% q& b" f) ^3 m8 KFormula 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。. D- L, ?; l p- T2 t! t& H% c
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 7 E5 Z$ Y1 k6 [7 g; n5.39.217.76And 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. 8 B& p l) A1 I3 y; OEventually, 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,childrenTVBNOW 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。. N: n4 D. D" `. f) T8 w
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
& Y; J6 d$ r8 j9 z" K6 e6 N公仔箱論壇11X must be 0 or multiple of 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。; z6 {( J2 r. W
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM