That is a very simple mathematics question.
6 f j; d4 S3 U) a9 i, Ewww2.tvboxnow.comLet x = Male, y = Female, z = Childwww2.tvboxnow.com1 b8 I1 _# w5 m3 M5 S; }
6x + 3y + z/2 = 100 Formula 1" u. _! G( |2 P% H
x + y + z = 100 Formula 2
/ w: K2 `/ F' M" J4 GTVBNOW 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。Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb- @0 ^ G& U' i, k- F
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
! |/ m1 g# A$ C8 `; l" }Formula 4 can change into 11x + 5y = 100 Formula 5
~/ |" W3 u$ i8 W1 S9 [& t2 Iwww2.tvboxnow.comIn 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。4 G6 E0 K6 C0 o) J
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. s! e9 \6 Z. c
Eventually, the answer is 20 female and 80 children and no male. |