That is a very simple mathematics question.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。8 X# a) J6 k# \- l) o5 I3 n6 F
Let x = Male, y = Female, z = Child 0 g* Q5 d5 ^1 N" B; K6x + 3y + z/2 = 100 Formula 1 1 ?5 ~+ `7 G! t+ b( B$ ?* w5.39.217.76x + y + z = 100 Formula 2 ' }. T+ Z! g& k6 N% w2 I5.39.217.76Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇2 h6 p! {9 t8 @' j, u
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 5 E# I8 k# P; u4 `2 f公仔箱論壇Formula 4 can change into 11x + 5y = 100 Formula 5) D/ ]- M* ?* w/ }
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. " J: h4 D, U/ N0 y, 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。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 = 80.3 @: P* P: [" \9 R# U+ s" X' @
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,children5 D9 o ?, `5 a/ K* t2 m5 T
0,20,80 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 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 A* I& S | S3 V* N
11x + 5y = 100 Formula 5
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。4 { W ^# _; [( U8 |) i. T0 E
11X must be 0 or multiple of 58 [2 ]/ n$ u# r( X$ e1 c
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children5 J( i; W; q3 w) g! o
5 male 公仔箱論壇5 M; {/ b- T, X4 T+ I* j1 @
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM