That is a very simple mathematics question. - N; d8 m! W$ U; sLet x = Male, y = Female, z = Childtvb now,tvbnow,bttvb7 K" d" V9 k$ F' w# m
6x + 3y + z/2 = 100 Formula 1 2 ~* ?. u& z: ftvb now,tvbnow,bttvbx + y + z = 100 Formula 2公仔箱論壇( I( c9 L- ]( ^3 h
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvboxnow.com7 J3 g! E/ A' g6 X( z* t. L
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4tvboxnow.com: J) E* s+ w& F$ S0 Q
Formula 4 can change into 11x + 5y = 100 Formula 5 4 E" S$ z4 Q. D1 l8 l5 K# oTVBNOW 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. : D1 U+ Y$ i) B# bAnd 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.tvb now,tvbnow,bttvb+ ^! j5 g2 N7 H# q
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 L7 R! ]. l f7 P. W5 S9 M0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 / m7 d. E, ^4 \
11x + 5y = 100 Formula 5
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11X must be 0 or multiple of 5 J9 O( w" e- V: L
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 childrenTVBNOW 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。; L* j2 r: ` W! Z
5 male 8 o% V* m) {# N3 Q3 q# D8 m; l, C( ktvb now,tvbnow,bttvb9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
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