That is a very simple mathematics question.公仔箱論壇9 B' e$ z! I: p3 J
Let x = Male, y = Female, z = Child公仔箱論壇% v: c# [- c7 m, x h, U7 _
6x + 3y + z/2 = 100 Formula 15.39.217.76, }) D2 Q$ ~2 L6 F
x + y + z = 100 Formula 2 1 E3 v( S4 o) N8 _% z- V2 rtvb now,tvbnow,bttvbSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 9 P% [. W/ O1 ], ntvb now,tvbnow,bttvbSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇/ J% F5 x7 S1 M- T& {( s
Formula 4 can change into 11x + 5y = 100 Formula 5 ; r) \; @+ M: X, o+ B1 c. s/ yIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.5.39.217.76' K2 |$ H9 g( l, A* Z; D9 x
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,bttvb6 s2 r9 z* f! o: ^1 `
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
, x `: n+ d( {2 ~1 H- w5 s9 e2 U6 [公仔箱論壇11X must be 0 or multiple of 55.39.217.76# L9 }# G" `6 {+ ]
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 3 r' o# C5 B3 x8 d公仔箱論壇5 male TVBNOW 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。: |' m5 v) a/ h, K y
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM