Look at "None to gainsay her" gain say means deny or contradict so this means that impudent means not showing due of respect
The answer is c sorry if its not right...
She goes to her room and wants to be left alone. Just when the reader thinks that she will further indulge in her grief, she gazes through the window and whispers "Free, free, free!"
It is hard to say that Mrs. Mallard is heartless, or that she didn't love her husband at all, or that he had treated her badly. None of this is true, as far as the reader can see in this short story. The point is deeper than that. Mrs. Mallard feels freedom from marital restraints for the first time. This is what she enjoys so much. This is the first thing that comes to her mind the moment she is no longer surrounded with other people. When no one's watching her, she can give way to her real feelings - not because she is a hypocrite, but because it is hard if not impossible to stay true to oneself (and open about it) in a small community.
So you subtract the fractal amounts from the whole with all of his customer being 1 and adding all the fractions 1-(1/8+2/5+3/10)
1-(1/8+4/10+3/10)
1-(1/8+7/10)
1-(5/40+28/40
1-(33/40)
1=40/40
40/40-33/40
7/40 of his customers chose a natural finish