twinsdragon

That is a very simple mathematics question.+ a( _6 @( N/ k9 e6 [( {
Let x = Male, y = Female, z = Child
( F7 R0 P& D+ s1 A) z% `6x + 3y + z/2 = 100   Formula 12 K9 E) j$ m) T: N
x + y + z = 100    Formula 2
6 ]  q  C- Q8 z- jSimplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇: s( r% z. i# B0 G- @5 i
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇4 \3 {) P* i. O6 `/ Y
Formula 4 can change into 11x + 5y = 100 Formula 5# s) `/ D; {$ o- p1 W$ s
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.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。9 I: ~9 L* u7 P5 X! b; \% b1 M) e
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.
9 L' ^- z) A% f- Ztvboxnow.comEventually, the answer is 20 female and 80 children and no male.