That is a very simple mathematics question. # Q1 a% O- L Z! `* E! S+ bLet x = Male, y = Female, z = Child : K1 n9 v8 _1 S6 A公仔箱論壇6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb" \0 [3 J4 _8 t7 \
x + y + z = 100 Formula 2 & V5 ~; U2 o; Y: e9 M" cTVBNOW 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 / N# ?* j) V/ _! E1 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。Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 47 D9 c6 C( C _
Formula 4 can change into 11x + 5y = 100 Formula 5 ' q1 x2 r( `& a0 O3 N$ J5.39.217.76In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.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。0 Y5 s! P! y2 |0 l
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. / D( V# I5 v' r" j& b% U! X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,childrentvb now,tvbnow,bttvb$ R. S% ?% ]+ ?1 ?! x8 ^; x! t
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
" b( y- E" m+ F9 x: @$ c5.39.217.7611X must be 0 or multiple of 5 4 |6 E5 Y$ A9 ^0 J* K5.39.217.76that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM