That is a very simple mathematics question. a/ C4 t6 X( 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。Let x = Male, y = Female, z = Child4 V3 w$ W* H, U4 e
6x + 3y + z/2 = 100 Formula 15.39.217.76, c* _9 P. R0 |& a% Q
x + y + z = 100 Formula 2 6 ]! K6 D. P) N5.39.217.76Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 ; y- t3 O8 h$ y; R& V+ [tvb now,tvbnow,bttvbSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 ) `) I; ^) I6 g. h. W# M- Btvb now,tvbnow,bttvbFormula 4 can change into 11x + 5y = 100 Formula 5 9 o& x0 i6 G# O# T! ?+ i8 cTVBNOW 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。In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇6 B- P6 a! B# B7 z1 g/ P* u0 y& K" t
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.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 }$ y8 D/ A8 M: G9 h; 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
5.39.217.76, z& E% } `" b- M
11X must be 0 or multiple of 5 , f% l4 J4 b( z4 G6 |. @; n3 w9 o5.39.217.76that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children/ l$ _9 c L( r9 n* @
5 male ; i _9 ^( ]9 ?7 b: e8 K0 W# ^tvb now,tvbnow,bttvb9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM