That is a very simple mathematics question. . H6 e2 I; k7 ~% j4 V; J/ \Let x = Male, y = Female, z = Child ( P' N4 V1 n8 j3 ?/ }" B, y6x + 3y + z/2 = 100 Formula 18 e' f v! a5 a9 V& U- F3 S
x + y + z = 100 Formula 2 5 _* [- L* D) j+ D& P' RSimplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.76# ]& p' u) U$ N% [) ]: B
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 2 a) I1 r/ [6 K9 g5.39.217.76Formula 4 can change into 11x + 5y = 100 Formula 50 w! ?& H4 w [6 |, P
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. $ @* b' J3 c% _/ z; ]tvb now,tvbnow,bttvbAnd 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.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 n/ f2 `$ }7 r1 f+ ^$ m' n8 B
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,childrenTVBNOW 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。! a- a2 O2 z6 l4 H$ a
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
5 Y/ m- B8 F7 t! d& F7 |& Htvb now,tvbnow,bttvb11X must be 0 or multiple of 5 5 l2 P) e& |, vthat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children公仔箱論壇 F7 V0 B d0 z) s5 D! v6 c
5 male ! x, x7 ]! p) T2 P公仔箱論壇9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM