That is a very simple mathematics question.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。. \6 L7 \6 i: c2 X7 j. z1 L
Let x = Male, y = Female, z = Child
6 |$ g, z. g( ]; kTVBNOW 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。% r- g: N4 o2 c+ q) H( v4 D6 g
x + y + z = 100 Formula 22 c* {" N3 G8 ^2 U* L' l. _
Simplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.76) h b1 d4 u/ r5 ] w# h" \7 `
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4' _9 @! S; y, q6 Y7 V+ p
Formula 4 can change into 11x + 5y = 100 Formula 59 D5 w2 W) C. D! \
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。2 G" q8 d' r9 M+ |" a$ o
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.! z: i8 [# ?, q* s/ N1 P. M
Eventually, the answer is 20 female and 80 children and no male. |