That is a very simple mathematics question.
5 ?6 J+ g3 E$ w* C9 x) V0 m5 D0 Ntvb now,tvbnow,bttvbLet x = Male, y = Female, z = Child
( D: n H/ z4 H/ J1 S8 l公仔箱論壇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。, C9 O1 H/ m" J, y. A! Z
x + y + z = 100 Formula 2TVBNOW 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。8 ~3 [7 R+ C, G. r5 s
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3TVBNOW 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。' u0 K- R& x, ~( ?( b
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 43 g7 ?* c& }: Q# W
Formula 4 can change into 11x + 5y = 100 Formula 5公仔箱論壇2 k7 F7 L4 R- c# W8 A
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
. ?6 R3 L. Q" O, |& LAnd 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.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。% E+ x: `0 D# I4 K5 u
Eventually, the answer is 20 female and 80 children and no male. |