That is a very simple mathematics question.
- k2 n. @+ c; A( r0 p: ~& h" m8 Hwww.tvboxnow.comLet x = Male, y = Female, z = ChildTVBNOW 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。! N* p6 ?; W- E5 w' S
6x + 3y + z/2 = 100 Formula 1www.tvboxnow.com, P; P P5 k8 u& }/ |
x + y + z = 100 Formula 2* q% p+ e' S+ E# ]
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3# O" W$ _; z8 B
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4& j! L, Z6 a Z0 f4 [) N S
Formula 4 can change into 11x + 5y = 100 Formula 5
: }" q$ _+ Z ]3 r& MIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
: \9 R0 b, s& M# V$ H0 ]tvb now,tvbnow,bttvbAnd 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.
( p5 Y2 H0 l4 \: b. sTVBNOW 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. |