That is a very simple mathematics question.
; [6 f z& [, v/ {% ^6 u4 j5 ETVBNOW 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。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。1 B) c, L7 h9 i4 Q
6x + 3y + z/2 = 100 Formula 1
- u) E5 P- h. Z- B2 T- J- ^公仔箱論壇x + y + z = 100 Formula 2; E% _3 `$ a: r% n7 u8 j3 K
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇0 h8 E. i( o5 z
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
. z k( `% E7 B; z, u5 g" c. ~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。Formula 4 can change into 11x + 5y = 100 Formula 5
1 }0 E2 f" M7 D0 d+ q$ yTVBNOW 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。In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.os.tvboxnow.com3 u) P$ v! p- }/ d, l- S( L! i+ T, F
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.
: I% D8 h8 ?# U- }tvb now,tvbnow,bttvbEventually, the answer is 20 female and 80 children and no male. |