You pay the present value of $1000 now to receive $25 at the end of each month over the next 5-year period. At the end of 5 years, the investor will also receive a windfall of $500. What is the annual interest rate of your investment? (Show all work for any credit)
We have the equality | |
1000 = 25*PVIFA(r,60)+500*PVIF(r,60), where | |
r = the interest rate per month. | |
This has to be found out by trial and error so that | |
the value of RHS in the above equation is 1000 | |
Discounting with 2% | |
= 25*34.76089+500*0.30478 = | $ 1,021.41 |
Discounting with 3% | |
= 25*27.67556+500*0.16973 = | $ 776.75 |
r lies between 2% and 3%. | |
By simple interpolation r = 2%+1%*21.41/(1021.41-776.75) = | 2.08751% |
Annual interest rate = 2.08751*12 = | 25.05% |
Get Answers For Free
Most questions answered within 1 hours.