That is a very simple mathematics question.tvb now,tvbnow,bttvb5 h) Q2 q$ V) F2 u, n* O! m
Let x = Male, y = Female, z = Child( o/ ]' R( [7 g1 ~) ]2 ?- Y2 w( v
6x + 3y + z/2 = 100 Formula 1
- A% h! f/ G6 [1 n# d1 Z- |# ztvb now,tvbnow,bttvbx + y + z = 100 Formula 25.39.217.76; j" F2 ]& a8 x" o5 _7 ~
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
o: M8 F4 r. r% ZSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇+ p v! r' q! c$ r3 t' ]
Formula 4 can change into 11x + 5y = 100 Formula 5公仔箱論壇; P1 h2 F9 g& |) X% l! z
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
$ M+ |( s& H( `; d& w/ S' u. @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。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.tvb now,tvbnow,bttvb5 g5 S, E8 O7 U c' d
Eventually, the answer is 20 female and 80 children and no male. |