That is a very simple mathematics question.公仔箱論壇; I% X( e) L* [! @% D1 e
Let x = Male, y = Female, z = Child公仔箱論壇9 K6 F7 W2 U9 z9 O3 M. h
6x + 3y + z/2 = 100 Formula 1
3 g+ G$ |! Y t# u公仔箱論壇x + y + z = 100 Formula 2os.tvboxnow.com A" v! H! C q7 b
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇* M: d2 J) s6 l, y( x; m
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
5 y& Z1 C. D" I3 R3 ATVBNOW 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 5
7 ^, Q3 S# L* s3 pTVBNOW 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.
6 L' A" }( d& T* y公仔箱論壇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.
5 [* C9 ]- q1 ]3 ~; y" u公仔箱論壇Eventually, the answer is 20 female and 80 children and no male. |