That is a very simple mathematics question.www3.tvboxnow.com! k% [: ?' ^* d
Let x = Male, y = Female, z = Childtvb now,tvbnow,bttvb0 O8 B, K, z7 l- H, a
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb5 J {3 Z# Q$ C2 p3 E( o- E. q# q7 a7 Z$ Q
x + y + z = 100 Formula 2 : Y; C' q/ U& `tvb now,tvbnow,bttvbSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 3 K4 N$ x- q: c( K$ \ A. f' m* i5 q3 ETVBNOW 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。Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 ( X4 |! }8 n& U4 L4 V$ Stvb now,tvbnow,bttvbFormula 4 can change into 11x + 5y = 100 Formula 5 , B% o- k3 A4 U* j5 e/ t' mIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.www3.tvboxnow.com w* i# N/ v' s
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." m2 w. w/ [7 s, e0 q- M' n
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