That is a very simple mathematics question. / E- O0 a7 v; j; DLet x = Male, y = Female, z = Child - ~ U: W2 [% k0 g* j7 G5 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。6x + 3y + z/2 = 100 Formula 1 3 ?3 [/ w4 J" _3 j. }3 p B7 Dtvb now,tvbnow,bttvbx + y + z = 100 Formula 2 " V$ ?3 Q3 j7 g2 d: F( S' W. S2 yTVBNOW 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 3tvb now,tvbnow,bttvb0 m4 R1 u$ }- a4 `3 Z k. L
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 0 v- R. z4 c" ?1 C; v9 N3 gTVBNOW 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。Formula 4 can change into 11x + 5y = 100 Formula 5 5 g0 i0 H' N2 d9 ktvb now,tvbnow,bttvbIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. : t- K& ?9 p' K2 ntvb now,tvbnow,bttvbAnd 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. ' v' [2 B, P4 \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,children7 H3 R3 ^1 M1 g. a- h
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
9 b( @# ~5 }5 r: a- g2 d
