That is a very simple mathematics question.3 Y! C/ H+ D- u3 v+ k1 e; q8 O* K
Let x = Male, y = Female, z = Childtvb now,tvbnow,bttvb) v6 a- S6 O: n6 ?
6x + 3y + z/2 = 100 Formula 1* E8 m+ L6 L& @4 ?* y* g, U8 k) d
x + y + z = 100 Formula 2TVBNOW 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。3 ?: W' U. K0 N$ e$ |1 ?; M h
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3& r# Z$ Z! g+ b2 ]9 ]
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 / q+ x/ B- J; C( e: {" Y, }7 kFormula 4 can change into 11x + 5y = 100 Formula 5 / O* e4 A/ J" h) J* V6 `% r0 t. qtvb now,tvbnow,bttvbIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 8 k; i7 w8 u2 {2 f5.39.217.76And 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. # X$ f X* m1 R% K$ ^ r1 `. K- c5.39.217.76Eventually, 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,children5.39.217.76; A& E! E- P7 b* L
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
公仔箱論壇0 |0 F; n8 L) x2 [1 e
11X must be 0 or multiple of 5 ! a4 Y( Z3 k% G0 O, P' zTVBNOW 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。that 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$ z9 G6 k; a I0 i
5 male 公仔箱論壇- A+ N9 ^# ]! y" B$ a4 k8 ?) f
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM