40000 = 10000(1 - (1+r)^(-6)) / r 4r = 1 - (1+r)^(-6) (1+r)^(-6) = 1-4r -6 ln (1+r) = ln(1-4r) you'll need to use an iterative procedure to solve for r.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.