翻译：有两个杯子的盐水- A和B.每杯是40克,盐的比例和浓度是3:2.往B里增加60克的水,再把B里的盐水往A中倒__25___克,再往A、B中加入水,直到每杯A和B是100克、盐的比例是7:3
设B中有盐x克.
x/2*3=1.5x(克)
(1.5+1）x/(7+3)*7=1.75x(克)
(1.75-1.5)x/(x/100)=25(克)
求解一道关于浓度的英语奥数题There are two cups of salt water——A and B.Each
1个回答
相关问题
-
there ___two cups of water on the desk.A is B are .
-
1.there are two kinds of sweet water A and B .a contains 270
-
There are two cups of tea on the table.(对two cups提问）
-
There ____________ a bottle of water and two bags of br
-
求解英语——Today we have two great specials,each of them are very
-
There are two critical consequences to the weight of water,a
-
There is a cup of water 正确么?
-
奥数题,很有难度!There are three men A,B,C,each person may be an hon
-
初二英语题There are ___on the table A two box of banana B two box
-
There are two cups of coffee on the desk.(对two部分提问）