That is a very simple mathematics question.tvb now,tvbnow,bttvb- M4 l. v, Y: M8 |/ E
Let x = Male, y = Female, z = Child5.39.217.774 q: {$ z% n n) W5 d6 @
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb( m+ m+ V* C# i4 y5 p
x + y + z = 100 Formula 2 / ~6 P5 x5 y- e) Q公仔箱論壇Simplify Formula 2 into z, we get z = 100 - x - y Formula 3& j& x* c/ b' B2 j0 ?. t
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 41 x' B, |: S5 K% e8 S
Formula 4 can change into 11x + 5y = 100 Formula 5公仔箱論壇# t' c- D& L ]! B8 c
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. & {# _* V' H( j% `" Z+ o1 S; C( d8 TAnd 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 = 80.5.39.217.775 g& W- O F8 s" ^ m; N4 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,children5.39.217.778 J) E* H; Z/ P8 T7 c
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
4 {: Z2 [) t& s+ J5.39.217.7711X must be 0 or multiple of 5 & D- k* L" |8 R3 Z6 R2 ^2 A公仔箱論壇that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children4 L) Z. P+ A' C
5 male 公仔箱論壇7 [; F1 P2 O; C/ C1 y5 b! J
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM