That is a very simple mathematics question.% k9 X U8 [0 m* U6 A+ v4 f
Let x = Male, y = Female, z = Child公仔箱論壇3 L3 r8 _8 e. P8 [
6x + 3y + z/2 = 100 Formula 1 6 _; P+ O! r. W0 d8 vx + y + z = 100 Formula 24 g( L6 Q h8 Z( m/ ?/ r, G
Simplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.76; u' X3 { R. c: J, E
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 43 G0 S) A7 B6 `2 P* Q7 R
Formula 4 can change into 11x + 5y = 100 Formula 5 & s. a& a1 Q& ?) R公仔箱論壇In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. + E& S x% |8 y9 dAnd 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. 9 l4 }# w) m7 A9 u! ~公仔箱論壇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 ) y/ {% ^6 f0 B) D3 ?5.39.217.760,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM