That is a very simple mathematics question.3 [0 E& Z+ k+ ?- P X
Let x = Male, y = Female, z = Child , z1 T2 N/ i) o; H9 i. Q& _" p' W5 L5.39.217.77:88986x + 3y + z/2 = 100 Formula 1 - Q: @% }! B9 ?8 F7 H VTVBNOW 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 3 N P' g+ W1 bSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 - J2 U, w6 T/ X: [! T8 o. xtvb now,tvbnow,bttvbSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇. R0 ^8 w7 _: L- ], J3 n# u
Formula 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。9 Y+ h" f8 {2 p+ `4 F! m
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.4 H* M1 T- Q: O: O# C
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.公仔箱論壇" s e; D. W" \, }
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
5.39.217.77:88981 D9 R Z# ]$ b
11X must be 0 or multiple of 5 * l, ^: y i6 ^2 }2 x3 ttvb now,tvbnow,bttvbthat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 9 W' A# J- p0 l G% G: J5.39.217.77:88985 male . Y1 c. o& b& v/ I% d+ I7 ]+ {" G9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
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