That is a very simple mathematics question.
7 {7 y( v" G6 e0 ?Let x = Male, y = Female, z = Child
& v6 w; O* S" w; iwww.tvboxnow.com6x + 3y + z/2 = 100 Formula 1
, A% }: N, K' I0 c公仔箱論壇x + y + z = 100 Formula 2
}6 P$ T3 {: F, c+ [: ^; \6 ^' kSimplify Formula 2 into z, we get z = 100 - x - y Formula 3
* n% j! i5 V/ f3 V公仔箱論壇Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
* B' `/ ^6 _# _9 E4 E, e) RTVBNOW 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
9 h" V' h" _4 w8 n+ \2 P" hIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.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。% r" z$ a$ C/ ~3 t- i- A
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.& q( u) W( p) }! p
Eventually, the answer is 20 female and 80 children and no male. |