That is a very simple mathematics question.
1 t% I. q. @0 E' L9 J) }Let x = Male, y = Female, z = Child
5 N: {4 ^3 v h& g' }. A公仔箱論壇6x + 3y + z/2 = 100 Formula 1公仔箱論壇1 V" k- |6 o4 I
x + y + z = 100 Formula 2
. I( {, Y) N, ?! r公仔箱論壇Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 `4 V; h2 X0 n( L+ t* \
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 40 h1 c# V' q8 K3 s, Q, s
Formula 4 can change into 11x + 5y = 100 Formula 5
1 P* V" s# s1 P8 MTVBNOW 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。In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇- B0 o+ l" h4 W9 h+ O" {5 q
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。" J" v# d$ I" u0 r& A. i! ~
Eventually, the answer is 20 female and 80 children and no male. |