That is a very simple mathematics question.
. V# t5 {7 t MLet x = Male, y = Female, z = Child
2 x4 X* R7 M' o3 H" b0 _公仔箱論壇6x + 3y + z/2 = 100 Formula 1
. k) y$ \" s/ K G/ y公仔箱論壇x + y + z = 100 Formula 2
. i2 H1 K# j7 ^7 J G: J公仔箱論壇Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇5 a; v( l, R) n U o2 G' j) R
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4TVBNOW 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。- r0 m! \" l9 L
Formula 4 can change into 11x + 5y = 100 Formula 5
6 k9 S8 T% A( ?" n" q* e公仔箱論壇In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
1 L! K& V, j2 i) Y0 Bos.tvboxnow.comAnd 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.+ X" }: L4 F! m) U+ M! U
Eventually, the answer is 20 female and 80 children and no male. |