That is a very simple mathematics question.www.tvboxnow.com* O6 X1 U, z: A7 G% M5 x
Let x = Male, y = Female, z = Childwww.tvboxnow.com* u3 J3 d, X h2 H( k# r! u
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb* n, l0 t: H8 E
x + y + z = 100 Formula 2公仔箱論壇! n4 g2 j# J! ^) x, F2 j3 [2 n
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
8 Y6 |/ c1 L' j/ @Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4www.tvboxnow.com K4 y8 a2 ?0 e4 c0 v
Formula 4 can change into 11x + 5y = 100 Formula 5
. t; T6 @) f6 g, x, ]& d% fTVBNOW 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.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。, e7 w1 h! x$ L w- c
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.
e5 L! M0 W3 S# H2 H- x& GEventually, the answer is 20 female and 80 children and no male. |