That is a very simple mathematics question. 9 E5 Z( d, @. t7 `- ~' H5.39.217.76Let x = Male, y = Female, z = Child $ Q* a7 [ a) h5 A- J5.39.217.766x + 3y + z/2 = 100 Formula 1 . D% E' Y L; h2 I8 R8 A1 G/ qTVBNOW 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 . @% [' r7 S2 ] y) Q5.39.217.76Simplify Formula 2 into z, we get z = 100 - x - y Formula 3' d8 d2 y3 O% o9 U
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 0 P* F x5 A$ v9 `/ fTVBNOW 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 5公仔箱論壇' f3 s f: O* Z4 s0 E. i' G l9 X! F
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 8 X% ~; M, O# K1 T I9 T公仔箱論壇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. 8 D" I/ C: Y1 ~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
5.39.217.761 i8 U' e9 m5 N
11X must be 0 or multiple of 5 & ?) ]8 B7 O5 x4 X3 y1 ]1 d9 _that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children; x, k5 x& J7 e: b( P
5 male 3 `' l! K, f. `$ h& ^5.39.217.769 female作者: dafunhei123 時間: 2007-10-15 10:39 PM