That is a very simple mathematics question.5.39.217.772 }& r# y5 V# l. h
Let x = Male, y = Female, z = Child/ N( E- ]+ b0 A, C7 y" w
6x + 3y + z/2 = 100 Formula 15.39.217.77" T0 v0 T3 n: O# g" S
x + y + z = 100 Formula 22 w7 h- x! T# O" [6 k
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 8 k! o; M* l8 B+ _$ t; G# L4 ]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。2 ^* E0 P! d8 `1 [. D
Formula 4 can change into 11x + 5y = 100 Formula 5 ; Y& n. b" }/ I$ _5 VIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want., h; ? E/ Z! W- \; i( p9 [! E
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. 6 v* L3 |, M( Y0 i; [' \! q5.39.217.77Eventually, 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 ( R2 E1 k2 C! u8 c. ^* W+ p公仔箱論壇0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
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。6 w& a# Z( c" F
11X must be 0 or multiple of 5 * ~7 k/ T4 B c+ K4 Ftvb now,tvbnow,bttvbthat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children * p- `0 |7 ~; D( 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。5 male 8 s# ?" @4 x$ A1 K" R
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM