At the same annual effective rate i a perpetuity paying 1 at
At the same annual effective rate i, a perpetuity paying $1 at the end of each 4-month period, with the first payment at the end of 4 months, has a present value of X.
 Calculate X.
 Answer: 41.6
 Below is what I did but I am getting the answer of 40.66. Not sure where I am going wrong.
 Solution
I think the answer may be wrong because i am getting the same answer. 40.6577

