That is a very simple mathematics question.
3 }# W: `* U9 A- x8 L$ ~tvb now,tvbnow,bttvbLet x = Male, y = Female, z = Child
) `8 V2 ^* c8 ?( K) G1 @+ h. bTVBNOW 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。6x + 3y + z/2 = 100 Formula 1
8 e3 @7 f2 M1 b0 N6 K# kTVBNOW 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。x + y + z = 100 Formula 2tvb now,tvbnow,bttvb* [$ V5 P9 m9 E; A/ i, s7 b# i/ U
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
: w% E# x [) Z7 @Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
3 ^. w" y0 f7 K% BFormula 4 can change into 11x + 5y = 100 Formula 5
5 ]% g; M3 A0 G0 t) a' VIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
y6 Q! g2 h3 ~1 A) V6 ?www2.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.www2.tvboxnow.com d1 ]& \! A2 y6 Z+ _, B
Eventually, the answer is 20 female and 80 children and no male. |