That is a very simple mathematics question.5.39.217.761 y+ y4 I6 W+ i0 r3 M& h8 \' b
Let x = Male, y = Female, z = Child + F$ i/ G) D: l* f% ?3 J/ B+ H( MTVBNOW 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。6x + 3y + z/2 = 100 Formula 19 ]6 v7 [, E) Z9 T/ M, ^
x + y + z = 100 Formula 2 1 M" w; I# Y8 t* }5.39.217.76Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 / N' m6 N4 i, i5.39.217.76Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 45.39.217.767 O( {3 \+ ?- \# |* j
Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb8 y" y' a6 H: X8 F; ]8 G
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.7 a8 l! b- m3 ^/ U$ 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. ) ~. w# _9 R/ ^3 o$ y1 v, ITVBNOW 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。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 ( i; {( V c' k& i7 v! Rtvb now,tvbnow,bttvb0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 / `& m# y L% Y
11x + 5y = 100 Formula 5
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11X must be 0 or multiple of 51 h* Y# r5 y2 L! m. o: n( q
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
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