That is a very simple mathematics question.TVBNOW 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- i1 q( \# Q7 ?! |, f( E
Let x = Male, y = Female, z = Child : ^+ S8 O' c& p( ^ l ptvb now,tvbnow,bttvb6x + 3y + z/2 = 100 Formula 1 , ~" j& ^; h, P ]- \" a0 ^tvb now,tvbnow,bttvbx + y + z = 100 Formula 2 1 h% x9 q4 @9 c& ~* \tvb now,tvbnow,bttvbSimplify Formula 2 into z, we get z = 100 - x - y Formula 3" |3 ^# R+ ?1 X5 ~1 `
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 ! R5 h: w3 H9 u0 A2 X5.39.217.77:8898Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb1 o, O \0 k1 e, N/ L
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.& Z8 E" C" g/ y# J7 Q' m# F. _# R
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.TVBNOW 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。2 J$ b* r5 C5 J: c
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,children8 r4 }2 w r" \+ G) D- c1 I+ t' O
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
5 U0 Y; s7 E) r& d# D7 E$ D7 }* ]11X must be 0 or multiple of 55.39.217.77:8898: p5 [/ v% G7 y( k; A- p, p$ p
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 5 j r3 i/ J" n8 p5 male ; ]: Q4 I6 f T1 ?
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
