That is a very simple mathematics question.5.39.217.764 O" s" d" I! G/ P: n
Let x = Male, y = Female, z = Child * E5 d+ _% F8 S, h- W5 Z4 X6x + 3y + z/2 = 100 Formula 12 w7 t- P& Z' e- k+ ?' g8 n
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。. ^. g& e- c( \. f Y# R( f
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3( E. I3 x% y: L3 D* J- d w
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 " j9 B! t4 ]8 U% g% ^3 W3 B& EFormula 4 can change into 11x + 5y = 100 Formula 5TVBNOW 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。# H1 r( ^. z+ x7 I
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.# K- @8 n- k5 E& l+ E- }
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. 0 t+ c; @$ o! C8 U0 i公仔箱論壇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" Z _. H# a6 E1 W; d# E2 |
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM