That is a very simple mathematics question. , V6 |8 L$ J5 G( N; b5 \8 a9 u公仔箱論壇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。* t- m3 e5 i7 B+ V7 F5 M
6x + 3y + z/2 = 100 Formula 15.39.217.762 b6 b, }/ I" C4 ^% `" H! ?
x + y + z = 100 Formula 2 + S6 t$ v( T2 I$ L& PSimplify Formula 2 into z, we get z = 100 - x - y Formula 3TVBNOW 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。4 z5 y3 M" A% w }! K- z0 Q, X
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4TVBNOW 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。 A+ x4 S. \" M i9 z
Formula 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。0 S4 \! N9 K% x! \2 m. X
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.5.39.217.76& m" m O7 C* z; n
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. 7 U5 T* o# ]! {7 _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
原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 tvb now,tvbnow,bttvb2 A" N$ m. b/ M! a r
11x + 5y = 100 Formula 5
5.39.217.768 O& L1 i6 g d; L; q) ~
11X must be 0 or multiple of 5tvb now,tvbnow,bttvb: Y1 P- Y7 b7 w. e
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children公仔箱論壇1 J* a0 \) d- T- J; A
5 male 公仔箱論壇$ T N; F( C1 K0 U8 H
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM