That is a very simple mathematics question.6 X( E1 O1 Q5 s4 Q
Let x = Male, y = Female, z = Child5.39.217.76& k3 ? R5 K1 U {- Y, E8 a6 s
6x + 3y + z/2 = 100 Formula 1 1 Z- H3 F& P; G+ r- m8 JTVBNOW 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。x + y + z = 100 Formula 2tvb now,tvbnow,bttvb3 ]& @7 `4 ?! [6 t- ~% U
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 ( V0 F. r3 o) R9 l: }) @4 o; I5.39.217.76Sub 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。* d( f" m% F# Z# z" H& ?$ [
Formula 4 can change into 11x + 5y = 100 Formula 5 8 D+ o, t% I! D6 o1 ?1 w& Ntvb now,tvbnow,bttvbIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.& e" v# b/ ?; r$ @6 }
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., R2 j: w2 `5 Q7 ~; H* N8 I! a
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+ ]" p. q$ u9 R% g. w3 k2 [5 l
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 tvb now,tvbnow,bttvb5 x; y# ]& S5 s' B3 X* `+ v+ u( y
11x + 5y = 100 Formula 5
tvb now,tvbnow,bttvb" s" ^' i. n( e. M
11X must be 0 or multiple of 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。5 E5 G( s# E" u% E( s
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 childrentvb now,tvbnow,bttvb+ f$ N- X$ K: }' F, F. H
5 male 5 v$ F# F+ f% p# g$ `, y
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM