That is a very simple mathematics question. 8 R) @0 f0 O" \+ X% |. sLet x = Male, y = Female, z = Child5.39.217.77/ h- _+ z# w, W$ A6 [
6x + 3y + z/2 = 100 Formula 1公仔箱論壇+ b8 j( E5 Q+ x) C- m
x + y + z = 100 Formula 2TVBNOW 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。( S1 Z; T3 a/ N! R/ ?" \* W: s7 P
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 + s4 [; l+ J/ \! P# L/ ~0 Z2 w/ ^公仔箱論壇Sub 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。1 [6 x, \, \' q* _* H/ |
Formula 4 can change into 11x + 5y = 100 Formula 5 3 T& L4 t- [6 R8 f6 O公仔箱論壇In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. * N- w9 G+ R6 ~1 P* Y; O5.39.217.77And 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.. l0 m9 w& \0 d- x: @) }8 j
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公仔箱論壇: x! t" Q8 R/ f8 m" N7 T
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
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11X must be 0 or multiple of 5 ( L) }2 f/ E+ I9 A9 a! R; zthat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children5.39.217.77% `" z2 F9 ^7 f" k
5 male 公仔箱論壇" S( d1 P5 ~3 n* [5 K
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM