That is a very simple mathematics question.tvb now,tvbnow,bttvb2 K" Y5 D9 u8 U. f; g
Let x = Male, y = Female, z = Child n0 g5 r( u' r3 J# G; E. _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。6x + 3y + z/2 = 100 Formula 10 o/ h% R+ I# g. l( b
x + y + z = 100 Formula 2 7 i2 d- j+ L, l r% X公仔箱論壇Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 % C% F/ T( N4 w3 P% @0 C! @4 i+ oSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 4 F9 J: N" ^( M4 y$ r ]5 U9 B4 lTVBNOW 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。Formula 4 can change into 11x + 5y = 100 Formula 5TVBNOW 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。7 b8 s( T6 S! @3 _
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. ; N( ]" L( h5 d8 f3 X5.39.217.76And 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,bttvb% d: w( Q- \3 N( E
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
+ v$ c" C) T4 F9 bTVBNOW 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。11X must be 0 or multiple of 5, V1 | O. L3 a6 \% y: v `5 E
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 9 S. i) B* V5 W8 W1 i0 z! t5 male 公仔箱論壇! w8 o T4 z2 D: _/ O, R+ ?) ^
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM