That is a very simple mathematics question.
% o% `# u( o: E$ `6 {1 q5.39.217.77Let x = Male, y = Female, z = ChildTVBNOW 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. U: z, P+ r6 `- k
6x + 3y + z/2 = 100 Formula 1' O; a5 o! D0 W
x + y + z = 100 Formula 2- f+ _2 A/ l* G" s& a8 Q [
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
; z/ f9 d: o. X, N3 bSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 45.39.217.773 @. Y' q0 `7 R" V3 y# }" v3 `
Formula 4 can change into 11x + 5y = 100 Formula 5
+ P4 c- H5 J; h0 d, s# Y5.39.217.77In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
9 ^* a2 }+ u7 l0 F3 \) uAnd 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.tvb now,tvbnow,bttvb3 z- R4 L% V/ T1 s+ |! f
Eventually, the answer is 20 female and 80 children and no male. |