That is a very simple mathematics question. 4 M+ O* Y, z; W; K. Q) h5.39.217.76Let x = Male, y = Female, z = Child ! f% @* H% N8 E. l6 |2 t z' {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。6x + 3y + z/2 = 100 Formula 18 o" Z/ J* u; `) g1 K" ~# k
x + y + z = 100 Formula 25.39.217.76: H! Z4 A/ Q( B4 D7 T. i
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3, h) n5 m2 I+ a$ X
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 : \9 |3 ^" |; H. W! _公仔箱論壇Formula 4 can change into 11x + 5y = 100 Formula 5/ p" Q6 d8 B9 L( `
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want., A/ x9 o6 c4 v+ r* P
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. , \$ N! J. q# e' ZEventually, 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; W7 [# M3 V/ L6 Y8 E2 Y
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
公仔箱論壇. \4 A) `8 v( Z0 x& K
11X must be 0 or multiple of 5 $ O& \( M! z% U0 k" K5.39.217.76that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 7 \2 u+ \" ~4 ?0 v) |5 male 4 N4 j: n2 I i4 D( _" c0 j公仔箱論壇9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM