MATH

It will take her one day if that is what you're asking

Mmmmm....let's look at this again.....

I believe you're saying that she can read 2/9 of her book everyday and she has 2/3 left to read.

Let x be the number of days that it will take her to finish the book.

Then..... (the part of the book she can read each day) * (days it will take her) = (the rest of the book)

Does this give you a hint about how to solve the problem??