That is a very simple mathematics question. 6 ]) x" d0 } t" @公仔箱論壇Let x = Male, y = Female, z = ChildTVBNOW 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。& o+ @0 f4 I; j$ L2 l v) b
6x + 3y + z/2 = 100 Formula 15.39.217.77" ?( J+ f2 P& ~
x + y + z = 100 Formula 21 [& ~ [) ?7 C. z
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 : n5 h# X) c, J* @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。Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 . d: Q. G# m8 Xtvb now,tvbnow,bttvbFormula 4 can change into 11x + 5y = 100 Formula 5 & ~$ V3 z/ g" d" |$ p" X+ v& ktvb now,tvbnow,bttvbIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. : Z: s6 |: r4 c4 M8 B6 m9 I( ~+ qAnd 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.tvb now,tvbnow,bttvb0 E8 [( s! T9 A7 x: O `
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7 e1 v' w% a0 }/ T, t$ a/ F; G
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM