That is a very simple mathematics question.tvb now,tvbnow,bttvb$ x/ U( R* a# `$ l8 n% F2 Q3 k
Let x = Male, y = Female, z = Child5.39.217.769 H8 q' y% r# a% u/ N
6x + 3y + z/2 = 100 Formula 1. L7 A; A1 j& d/ a x1 r1 o
x + y + z = 100 Formula 2 2 i2 O& W8 c3 B4 J; TSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 # x2 C& l+ X# R( ^: ASub 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。2 w6 c: w7 C" \. f9 L
Formula 4 can change into 11x + 5y = 100 Formula 5公仔箱論壇5 o, f' T8 R& g/ _# D2 S
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.& d4 m& P$ B- U# i7 S+ W
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 = 80.0 v: Q/ \1 P. ]* L: P* _
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
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11X must be 0 or multiple of 5tvb now,tvbnow,bttvb2 ?$ {0 B9 Z1 U7 V0 _3 D, M; Z- R
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM