That is a very simple mathematics question.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。* T/ z3 z' v' K( Q
Let x = Male, y = Female, z = Child
, p7 m' ]$ e, {( Q" k7 Sos.tvboxnow.com6x + 3y + z/2 = 100 Formula 1os.tvboxnow.com9 z- Y) k) e0 z* n! {( k+ K# |
x + y + z = 100 Formula 2
7 S( W: ]3 C- K4 ?) H5 sSimplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb; [ |7 {4 Z) O2 ^" E6 b
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇& Q6 _" a0 I2 c) H$ B, r2 R
Formula 4 can change into 11x + 5y = 100 Formula 5
: P& o' p, X" \! v. |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.
, a) o* o$ A" y9 sos.tvboxnow.comAnd 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.- Q7 O( [# s4 J& A
Eventually, the answer is 20 female and 80 children and no male. |