That is a very simple mathematics question. 3 n8 }( ^, ~* U& B1 {( g2 C0 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。Let x = Male, y = Female, z = Child5.39.217.761 @8 d8 N) ~0 x6 [" G7 s7 A
6x + 3y + z/2 = 100 Formula 1 6 ?8 \- q+ N i! u, N) h+ \% w0 HTVBNOW 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 }# v$ b5 b) Etvb now,tvbnow,bttvbSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 0 v5 \1 k9 Q1 B9 a* J公仔箱論壇Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 45.39.217.76. Q% Q4 D8 q4 _ O9 |
Formula 4 can change into 11x + 5y = 100 Formula 5 ) q" I2 R" W5 C& \In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. . b J+ k6 d) ^) [5.39.217.76And 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. ) [: N3 \- O8 QEventually, 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 U: ?& J/ T! s3 E
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM