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#1




Annuity Question  Unknown Interest rate
Question:
Using an annual effective interest rate j>0, you are given: (i) The present value of 2 at the end of each year for 2n years, plus an additional 1 at the end of each of the first n years, is 36 (ii) The present value of an nyear deferred annuityimmediate paying 2 per year for n years is 6. Calculate j a) .03 b) .04 c) .05 d) .06 e) .07 I understand the solution listed, but why is the way I solved the question giving me a different answer? 
#2




Your second line should be 3 angle n + 2 *v^n * angle n.
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"I'm tryin' to think, but nuthin' happens!" Last edited by Breadmaker; 07072017 at 12:20 PM.. Reason: Forgot the 2. 
#3




Draw a timeline. It helps visualize how the payments are being made.
Looking at your work ... ... does not follow from ... There are several ways to approach this, aside from the answer you provided. After drawing a timeline, here's how I approached it:
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