If Jennifer has 400 dollar more than Brian has, if she gives Brian 20 % of her money she will have to giver Brian 80 dollars which comprises 20% of 400 dollars.
That is a simple calculation: 20/100 x 400 = 80
Question solved.
I would say that the last answer is the most likely to occur
your going to have to put some more to that question
The answer would be grades (I think)
She could try becoming an author, they write in magazines, newpapers, books, and articles. She could write what she wishes and it's on her own.