That is a very simple mathematics question. # `4 B4 H5 L" d# r& e( _" o% [tvb now,tvbnow,bttvbLet x = Male, y = Female, z = Child ! e8 e6 i) H- d+ Z5 O5 k1 m5.39.217.766x + 3y + z/2 = 100 Formula 15 K2 ~$ d6 Q, i: M: [4 ]
x + y + z = 100 Formula 2 % ^& V2 @! G; _7 Q* pSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 3 ?6 R" t4 `: k% B' @7 j- V7 c4 C% ?6 ]Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇, K0 c( ?5 d, t" u( z: O; n9 ?! z
Formula 4 can change into 11x + 5y = 100 Formula 5公仔箱論壇# ^8 c! E! D! {
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.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。5 C. w0 o( n$ A, g) g& m
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. 8 m+ b" I' R( k, {5.39.217.76Eventually, 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,children7 T; ^4 b* o) C+ y
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM