That is a very simple mathematics question.公仔箱論壇0 D3 S2 t V/ |% L* P, ]
Let x = Male, y = Female, z = Child
& f( l1 D2 a$ ~ M0 k, z) s9 O4 _. _6x + 3y + z/2 = 100 Formula 1
! L- |! Z+ ^- g% h0 |, {: `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。* p; {) w/ h! L0 c# V( z$ ~
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
; P1 j$ s/ O1 ^' O# ^* `" p8 d5 g5 h5.39.217.76Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇. t8 y( R0 v2 d
Formula 4 can change into 11x + 5y = 100 Formula 55.39.217.768 A- J- |/ Q& j$ @# |# p- I# h
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.+ M; U8 M, X( R2 u' N
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.
& T5 F9 B5 B1 ~, c# 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。Eventually, the answer is 20 female and 80 children and no male. |