That is a very simple mathematics question.
2 v- V9 \8 f! [! RTVBNOW 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。Let x = Male, y = Female, z = Child
% Q! X- L7 e, G! J. Htvb now,tvbnow,bttvb6x + 3y + z/2 = 100 Formula 1
# I& g0 W1 H F1 y. O7 W, |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。x + y + z = 100 Formula 2
8 ?! ], v. b( f2 X- E$ J& d0 aSimplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb7 {8 i9 e+ @' Q
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
& r8 n& y% m$ q1 JTVBNOW 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。Formula 4 can change into 11x + 5y = 100 Formula 5
$ z* F2 J _& u1 T$ p5.39.217.77:8898In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.9 }2 k9 w' C) I
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.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。0 n, s6 [: c, h! Q8 S# }2 [' m
Eventually, the answer is 20 female and 80 children and no male. |