That is a very simple mathematics question. 2 m7 s* {6 a, _" A A% D2 v! }# q7 h公仔箱論壇Let x = Male, y = Female, z = Child, `- t6 N# D- ~, b$ T
6x + 3y + z/2 = 100 Formula 1 ! g+ s. [( W$ I3 T: |' c p公仔箱論壇x + y + z = 100 Formula 2 ( [/ Q9 V2 J" M4 g# USimplify Formula 2 into z, we get z = 100 - x - y Formula 31 a7 X! K# d: L( T; Z3 `
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。6 A2 }1 e9 y+ K( {
Formula 4 can change into 11x + 5y = 100 Formula 5 2 \* S2 y7 d6 x% J/ p8 D5 m: n公仔箱論壇In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. $ h. {# y' R$ b& Y' e9 B( ]- eAnd 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. : R# ^6 F5 J0 t; K/ w0 a% f5.39.217.76Eventually, 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 9 K) l. z6 V6 |* b0 Y, C0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM