That is a very simple mathematics question.TVBNOW 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。, D1 H* {8 P+ z/ z
Let x = Male, y = Female, z = Child
/ s+ {3 u ` Y+ @* T4 otvb now,tvbnow,bttvb6x + 3y + z/2 = 100 Formula 1
I) A7 p y6 K5 Ntvb now,tvbnow,bttvbx + y + z = 100 Formula 2公仔箱論壇2 ~* l5 @6 ]4 n7 s* h9 T Z W
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇) M9 x: ~4 t1 S9 |6 \' ^$ k
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
# H1 T" {/ o& @- l3 t7 n- \, CTVBNOW 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。Formula 4 can change into 11x + 5y = 100 Formula 53 W1 e$ U; ?* A
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
0 _9 }; _' L. X5 S% J; R! ~( TAnd 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.
' z4 C( h* n* `7 D# _/ Bwww3.tvboxnow.comEventually, the answer is 20 female and 80 children and no male. |