That is a very simple mathematics question.
+ @$ q: n) d, q2 J) @3 _Let x = Male, y = Female, z = Child
# m. }; W) k5 Uwww.tvboxnow.com6x + 3y + z/2 = 100 Formula 1
7 R b2 T4 c. J0 E" Utvb now,tvbnow,bttvbx + y + z = 100 Formula 2
. ^2 ~* ^" M: Y# S( FSimplify Formula 2 into z, we get z = 100 - x - y Formula 3
( E/ `7 f9 L+ {Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4tvb now,tvbnow,bttvb# p ?! c3 N/ x8 y
Formula 4 can change into 11x + 5y = 100 Formula 5
/ t% [3 Y2 l% m. P; Z* kTVBNOW 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.www.tvboxnow.com7 N7 R! Z* \: i0 b7 y
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,bttvb1 m9 u* C: y7 @# i5 L+ w
Eventually, the answer is 20 female and 80 children and no male. |