In: Finance
Two payment plans are considered. Plan A pays $100 immediately, $200 in 2 years and $100 in 3 years. Plan B simply pays $350 immediately.
(a) Compare the present values of Plan A and Plan B at 7.8% and 8.5% effective interest rate per year.
(b) Assume Plan A is purchased for $350 at the time of the first payment.
Prove the existence of a unique yield rate which lies between 7.8% and 8.5%.
(c) Using a single iteration of linear interpolation between 7.8% and 8.5%, find an approximate yield rate.
Ans (a)
Plan A | |||||
Year | 0 | 1 | 2 | 3 | Total |
Cash flow | 100 | 0 | 200 | 100 | |
PV Factor @7.8% | 1 | 0.9276 | 0.8605 | 0.7983 | |
PV Factor @8.5% | 1 | 0.9217 | 0.8495 | 0.7829 | |
PV @ 7.8% | 100 | 0 | 172.1 | 79.83 | 351.93 |
PV @ 8.5% | 100 | 0 | 169.9 | 78.29 | 348.19 |
Plan B simply pays $350 immediately, so its present value is $350.
Plan | Discount Rate | Present Value |
A | 7.80% | 351.93 |
B | 7.80% | 350 |
Plan | Discount Rate | Present Value |
A | 8.50% | 348.19 |
B | 8.50% | 350 |
Ans (b)
Ans (c)