That is a very simple mathematics question.tvb now,tvbnow,bttvb. Z1 e$ E i4 i. R/ |# ~; Q
Let x = Male, y = Female, z = Childtvb now,tvbnow,bttvb" |; a: o- N" Q& `8 n6 W/ T
6x + 3y + z/2 = 100 Formula 1
6 \5 `- u7 H8 e0 Dos.tvboxnow.comx + y + z = 100 Formula 2
Z2 H/ t9 q) a) c' J+ \4 a公仔箱論壇Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
) _ r2 z. L0 N" @" a4 ]+ D7 @! v公仔箱論壇Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
$ v1 r7 W* V: Q8 j4 l+ GTVBNOW 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公仔箱論壇5 o3 _: S2 j; M
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb. s, G0 N) h) {* M' 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.os.tvboxnow.com$ i4 x' f# t1 v; U5 Q
Eventually, the answer is 20 female and 80 children and no male. |