That is a very simple mathematics question.
) D; J1 }" {# M! q$ t/ `公仔箱論壇Let x = Male, y = Female, z = Childtvb now,tvbnow,bttvb7 D7 ^6 v. K4 T q# _' n
6x + 3y + z/2 = 100 Formula 1TVBNOW 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。# p9 N6 e7 B* Z* d9 S8 L
x + y + z = 100 Formula 29 A6 d9 P/ G+ H, ~
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
! `7 p5 C z9 }7 s$ s/ btvb now,tvbnow,bttvbSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4TVBNOW 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& r5 c5 r( L4 N
Formula 4 can change into 11x + 5y = 100 Formula 55.39.217.77& Q( ]0 l, e5 W
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。, x* J& Q) g# [) \$ R& X7 [% m @
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.tvb now,tvbnow,bttvb. i( k& M. M% R: K- A; V' ?
Eventually, the answer is 20 female and 80 children and no male. |