That is a very simple mathematics question.
+ Y2 |+ {9 a$ _' Q- eLet x = Male, y = Female, z = Child# [4 Z* \' M4 |! n8 @8 p1 ^
6x + 3y + z/2 = 100 Formula 1
8 ]# Z. H N/ l1 e7 A公仔箱論壇x + y + z = 100 Formula 2TVBNOW 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。4 Q8 c2 s8 S( X V) o8 y8 |
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
3 G0 t, b6 t' _3 d% |; ]Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
9 [7 O V( Q. Z/ D/ |5 V, dFormula 4 can change into 11x + 5y = 100 Formula 5
' m$ B4 G' ^2 j- C5.39.217.77:8898In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
4 G! n4 Z- B# ~, ^' g/ m# ^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.
* v. M& b; ]1 s% |7 N; \9 A# wTVBNOW 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。Eventually, the answer is 20 female and 80 children and no male. |