That is a very simple mathematics question.tvb now,tvbnow,bttvb( s1 V7 L& g1 l( b
Let 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。, Q6 C: f' D1 d1 @% t' W% w
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。( Y4 ~2 _' k: n
x + y + z = 100 Formula 2
) k9 \0 U' W9 H/ L9 `* [6 H+ kSimplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇2 t( s" A+ Q! G' N2 F. n3 p( n# t
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4, a# z5 x# ~# b5 j
Formula 4 can change into 11x + 5y = 100 Formula 5
" O% ^ N( I: E6 M3 F3 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。In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb* q3 P, f" Z2 c. e) y) f) y
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.
& N! j5 @ q0 B" R8 k& LTVBNOW 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。Eventually, the answer is 20 female and 80 children and no male. |