That is a very simple mathematics question.tvb now,tvbnow,bttvb; A5 \/ o" z! I r7 Q* D4 G2 r
Let x = Male, y = Female, z = Child * j- ^- V; [: r" |; h$ _5.39.217.766x + 3y + z/2 = 100 Formula 1公仔箱論壇5 n3 b U' ]' O8 s1 Z0 \3 p
x + y + z = 100 Formula 2 / n7 O4 } o* v, i/ xSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 0 p7 {. ~2 ]2 C/ E1 i3 r: O& xSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 6 E( I) ^, A' n( b! w9 k公仔箱論壇Formula 4 can change into 11x + 5y = 100 Formula 5 ' ^, z* G: l' IIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 9 |/ B7 x) ` |5 f8 L$ q5 h% ]) K7 PTVBNOW 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。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./ H1 `8 o; N) {- \
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
_& R6 D4 V x3 f+ c. ?' c5 pTVBNOW 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。11X must be 0 or multiple of 5tvb now,tvbnow,bttvb9 R' {# U5 @- @/ t
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children( B! W0 V1 k% }; @5 w
5 male + E2 ], ~" m5 s8 l6 u! A" Y2 w
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM