Answer:
5.72%
Explanation:
Calculation for the effective annual rate of return
First step is to find the rate using financial calculator
Number of years = 10*2 = 20
Present value =PV = -800
PMT = [3%/2] * 100 = 15
FV = 1000
Using financial calculator we are going to press the CPT then the I/Y which will gives us 2.82% as the rate
Hence,
Periodic Rate = 2.82%
Last step is to calculate the effective annual rate of return
Using this formula
Effective Annual Rate = [1 + Periodic Rate]^Number of compounding periods in a year - 1
Let plug in the formula
Effective Annual Rate = [1 + 0.0282]^2 - 1
Effective Annual Rate = 1.0572 - 1
Effective Annual Rate = 0.0572 *100
Effective Annual Rate =5.72%
Therefore the effective annual rate of return will be 5.72%