1.A loan is offered with monthly payments and a 12.50 percent APR. What’s the loan’s effective annual rate (EAR)?
2. Assume that you contribute $360 per month to a retirement plan for 15 years. Then you are able to increase the contribution to $720 per month for another 25 years. Given a 6.0 percent interest rate, what is the value of your retirement plan after the 40 years?
Part 1:
APR = 12.50%
EAR = (1 + 12.50%/ 12)12 - 1
EAR = (1.010417)12 - 1
EAR = 1.132416 - 1
EAR = 13.24%
Part 2:
PMT = 360
N = 15 *12 = 180
I = 6%/ 12 = 0.5%
PV = 0
Using Financial Calculator, the value at end of 15 years
FV = 104,694.74
Now we will calculate future value at end of 40 years.
FV = 104,694.74 * (1 + 0.5%)(25 * 12)
FV = 104,694.74 * 4.4649
FV = 467,458.85
Now will calcualte value of 25 year annuity.
PMT = 720
N = 25 *12 = 300
I = 6%/ 12 = 0.5%
PV = 0
Using Financial Calculator, the value at end of 25 years
FV = 498,955.65
Total value = 498,955.65 + 467,458.85
Total value = 966,414.50
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