That is a very simple mathematics question.
6 T5 } {( w$ A4 ETVBNOW 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
, G! c8 U! c2 U2 Y1 _! u+ q公仔箱論壇6x + 3y + z/2 = 100 Formula 1
A: Y; k; o. j* s9 Dx + y + z = 100 Formula 2TVBNOW 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- b* [7 Y& t0 x$ D( w6 [
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
9 L3 ~/ {; p$ `/ x3 `www3.tvboxnow.comSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
) ~; t4 k3 k: ^ LFormula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb2 x% ?2 y7 ^, t5 N5 L
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.. i, l) f% x K
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.
5 } [0 y8 e' ^8 ]7 }( E4 r公仔箱論壇Eventually, the answer is 20 female and 80 children and no male. |