That is a very simple mathematics question.8 U/ }; K. T( j3 x) S
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 O5 v: c3 f4 v# c6 O z+ P
6x + 3y + z/2 = 100 Formula 1 ( m7 A7 A8 t3 O3 \/ b5 R1 Mtvb now,tvbnow,bttvbx + y + z = 100 Formula 26 d$ [8 a0 o5 r& |
Simplify 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。& r2 V/ Z1 v& X, M# D
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4tvb now,tvbnow,bttvb5 w8 F( H- B* g2 [; ?1 W3 Q
Formula 4 can change into 11x + 5y = 100 Formula 5公仔箱論壇0 a" M1 R- H& r1 c5 C" U
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want./ f8 X" u* t6 X& g9 ~
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.tvb now,tvbnow,bttvb- g5 u: v5 k2 b6 A' F/ ^) b
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,children . d9 }( Y4 ]5 i. U c; ~tvb now,tvbnow,bttvb0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM