A chemist has 3 liters of a 40% alcohol solution. How much should he pour out and then replace with pure alcohol to get 3 liters of a 75% alcohol solution?

pakistan's principal natural resources are arable land and water. about 25% of pakistan's agriculture accounts for about 21% [1] of gdp and employs about 43% of the labour force. in pakistan, the most agricultural province is punjab where wheat and cotton are the most grown.

step-by-step explanation:

4  

25

5258y

54.

t5

5r

54

5856

542

5458

86

.8558.65

565

565

55898

786

8/95

5896

8656265

556478

where is the graph? need more info

the answer is "add 2y and y"

step-by-step explanation:

you need to collect the like terms first.