That is a very simple mathematics question. 2 L! H( \' v2 Gtvb now,tvbnow,bttvbLet x = Male, y = Female, z = Child5.39.217.76: i; s9 a8 ]( x( ?5 V- V
6x + 3y + z/2 = 100 Formula 1 # B) T) X. Q t& GTVBNOW 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。x + y + z = 100 Formula 2 8 i6 s* r8 S _# _$ L( v+ ?% rTVBNOW 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。Simplify Formula 2 into z, we get z = 100 - x - y Formula 3- r+ y/ k1 j$ F
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 2 ^$ U, y7 H( U. \公仔箱論壇Formula 4 can change into 11x + 5y = 100 Formula 5 & t1 q8 N6 u1 R+ j2 y2 I7 hTVBNOW 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& ?, t& j7 `1 y9 o
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. $ {; f0 w. ?* r# F3 Y/ g) C/ Y/ v5.39.217.76Eventually, 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,children 0 ~5 L* Z) c6 X a5 p公仔箱論壇0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM