That is a very simple mathematics question.
3 m0 @, Y# [5 _: Z: |4 [5 J+ ]公仔箱論壇Let x = Male, y = Female, z = Child
/ i t6 S8 F) Q, 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。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。( {! Y9 H+ a9 b) o
x + y + z = 100 Formula 2tvb now,tvbnow,bttvb( g- i K# Q; S& A
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
/ @+ J) d$ k5 W2 U% r5 m$ UTVBNOW 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。Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
0 |/ n7 m+ f4 d0 f) h. U5 {7 ]公仔箱論壇Formula 4 can change into 11x + 5y = 100 Formula 5
( S6 H! K: j1 u; p+ q6 t6 Btvb now,tvbnow,bttvbIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇: C. }/ A5 [ g0 Y* @7 `
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.
3 ^+ W% x0 i! W/ \Eventually, the answer is 20 female and 80 children and no male. |