That is a very simple mathematics question.os.tvboxnow.com8 y" \, o7 {8 B# I' X- Z# }0 B* A
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。( h) B2 j$ }4 q" L5 }' I
6x + 3y + z/2 = 100 Formula 1
* _' b$ m, m- l6 {# ~9 F5 Ktvb now,tvbnow,bttvbx + y + z = 100 Formula 2+ u; K- f% f7 Z) g8 x/ W" [) g
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb7 L# r: ]/ A1 x, ]
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
& G% y y# A5 W4 G/ M: W8 |3 A公仔箱論壇Formula 4 can change into 11x + 5y = 100 Formula 5
- F& d( h( h/ X6 W B* n* i" W* Ttvb now,tvbnow,bttvbIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.2 P' e& P. e* \" ?9 B; \7 e$ j, V7 b
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.公仔箱論壇: v# ` }6 m9 E7 q% \2 U
Eventually, the answer is 20 female and 80 children and no male. |