That is a very simple mathematics question.
0 Q( i9 N7 y- p' W) ktvb now,tvbnow,bttvbLet x = Male, y = Female, z = Child
5 Q- o. [1 D% p: g& `5.39.217.77:88986x + 3y + z/2 = 100 Formula 15.39.217.77:88983 I) D: Z& M- N7 R9 R
x + y + z = 100 Formula 2
* D( C; w! F& q# Y9 a' F# s: DTVBNOW 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。Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb3 X% e, z( c* T( \6 k
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
8 x9 _0 v j7 {1 h" Jtvb now,tvbnow,bttvbFormula 4 can change into 11x + 5y = 100 Formula 55.39.217.77:88988 F; L" ?# U" t' {$ w9 }" N. Q
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
1 u- G& k$ X% {2 `5 T7 A. _+ `+ yAnd 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.公仔箱論壇. x* ]' H/ l) U2 b8 d
Eventually, the answer is 20 female and 80 children and no male. |