That is a very simple mathematics question.
k$ ]- f* `0 k% Q. A; G7 N( QTVBNOW 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。Let x = Male, y = Female, z = Child
! O1 O! T, \1 x/ Wtvb now,tvbnow,bttvb6x + 3y + z/2 = 100 Formula 1
: {' T Q) t; l) f I8 \+ V" C1 q公仔箱論壇x + y + z = 100 Formula 2公仔箱論壇) ^; G( o1 ~$ P9 g; s6 E
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
. x/ ]- O9 `& f' d/ t# k( zSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇9 x$ ]* h- b8 J; Y- j! H' a# m
Formula 4 can change into 11x + 5y = 100 Formula 5www1.tvboxnow.com8 Q, c: p$ G; F2 W" B: K
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
a1 J7 h; I* s" E1 Gwww1.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.
2 m, T" D3 [9 F9 O/ [公仔箱論壇Eventually, the answer is 20 female and 80 children and no male. |