That is a very simple mathematics question.tvb now,tvbnow,bttvb7 T& R2 c+ t `) h, U9 \" Y
Let x = Male, y = Female, z = Child公仔箱論壇0 w9 X5 p1 i+ a5 M v9 ?: j
6x + 3y + z/2 = 100 Formula 12 g" v! g+ o- B0 S9 P
x + y + z = 100 Formula 2) t( t3 z( n4 w: c. a
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
5 a: H, V5 f0 } p) y2 DTVBNOW 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。Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇1 m$ {/ s% t6 `- y! G2 G* r
Formula 4 can change into 11x + 5y = 100 Formula 5
7 v. U1 R; O0 ~" R; d( F& {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。In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
/ i/ c8 i3 V6 P- Y& j' m4 ^6 btvb now,tvbnow,bttvbAnd 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.公仔箱論壇$ u0 R# G! G0 I/ Y7 I1 |
Eventually, the answer is 20 female and 80 children and no male. |