That is a very simple mathematics question.公仔箱論壇& J$ B, b8 s1 T* _5 X/ U' L
Let x = Male, y = Female, z = Childtvboxnow.com, z! L$ O7 G3 x& N) E
6x + 3y + z/2 = 100 Formula 1TVBNOW 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。- m/ @& ` ~" M
x + 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。 s5 q x# i2 V O! J7 i( h7 Z
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
5 ]& n6 b/ X7 e( X& k0 P8 Ytvboxnow.comSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
# l9 k, _' z# M" @! ?tvboxnow.comFormula 4 can change into 11x + 5y = 100 Formula 5
( e' J) N' G+ p6 A4 z* ZIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvboxnow.com$ g/ Q# u7 f7 H- n" U) J! 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.
! I m4 x Q% r) Q! C9 W9 C$ C% `4 b+ dtvboxnow.comEventually, the answer is 20 female and 80 children and no male. |