That is a very simple mathematics question. : q& J6 R2 \# y' z0 b7 l7 D7 ~5.39.217.76Let x = Male, y = Female, z = Childtvb now,tvbnow,bttvb& p6 G5 b Q6 n5 P% j4 x# n1 w0 z' Z0 {( w
6x + 3y + z/2 = 100 Formula 1 ) E# A: x! m! E0 ?. R0 Mx + y + z = 100 Formula 2 6 T+ B; ~) w' b5 Z1 nSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 + D' W4 }* ^+ j+ |" iTVBNOW 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。Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4) w7 X- P `5 A B* [# b6 m
Formula 4 can change into 11x + 5y = 100 Formula 5 1 l( i0 V1 U) m! P2 o( ~In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.# L2 q( S$ U. N, c: b' Y/ 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. ( y! `6 }! F! N: \. F3 @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。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公仔箱論壇$ l7 m6 j7 O7 h( G
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
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11X must be 0 or multiple of 5 1 e7 c' ?4 U% {. D* x) I- A/ X, rtvb now,tvbnow,bttvbthat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 0 D6 ]1 C: w- f' V) X/ e7 m4 E. w5 male 7 H( F$ n; ~ R& I t. ^
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM