That is a very simple mathematics question. % {2 S% a" d1 b% r4 fLet x = Male, y = Female, z = Child5.39.217.76) x& E: a$ W4 {) Z, _4 e
6x + 3y + z/2 = 100 Formula 1 # p. \+ Y' J( q# ^2 q0 j, d0 }6 s; x+ ctvb now,tvbnow,bttvbx + y + z = 100 Formula 2: Z; O! ]2 s8 f* }3 N# K; S9 ]
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 / S0 g. e; P$ x+ aTVBNOW 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 4 + o7 K5 P# w% ?6 b9 b. }5.39.217.76Formula 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。# s: a, H9 \3 a, w ]
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. , j0 ^- }/ {2 ?- aAnd 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. " o" p) \5 [3 q8 T+ ~6 o5.39.217.76Eventually, 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,children5.39.217.768 Y9 \" ^% i% O& J% }0 M# w0 G, n
0,20,80 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 tvb now,tvbnow,bttvb9 _7 U z. o2 N# \( L+ V/ T
11x + 5y = 100 Formula 5
8 n: ]; C- U( e9 K, JTVBNOW 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 5 6 i7 O& C' F' N4 A0 U3 u$ i& j5.39.217.76that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM