select the correct answer. which account has the highest annual interest rate? a. account 1: interest is…

select the correct answer. which account has the highest annual interest rate? a. account 1: interest is compounded annually at a rate of 3.28%. b. account 2: interest is compounded monthly at a rate of 3.25%. c. account 3: interest is compounded weekly at a rate of 3.10%. d. account 4: interest is compounded daily at a rate of 3.15%. e. account 5: interest is compounded quarterly at a rate of 3.25%.
Answer
Explanation:
Step1: Recall compound - interest formula for effective annual rate (EAR)
$EAR=(1 + \frac{r}{n})^{n}-1$, where $r$ is the annual percentage rate (APR) and $n$ is the number of compounding periods per year.
Step2: Calculate EAR for Account 1
Since it is compounded annually ($n = 1$) and $r=0.0328$, $EAR_1=(1+\frac{0.0328}{1})^{1}-1 = 0.0328$ or $3.28%$.
Step3: Calculate EAR for Account 2
Compounded monthly ($n = 12$) and $r = 0.0325$, $EAR_2=(1+\frac{0.0325}{12})^{12}-1\approx1.0329 - 1=0.0329$ or $3.29%$.
Step4: Calculate EAR for Account 3
Compounded weekly ($n = 52$) and $r = 0.0310$, $EAR_3=(1+\frac{0.0310}{52})^{52}-1\approx1.0315 - 1=0.0315$ or $3.15%$.
Step5: Calculate EAR for Account 4
Compounded daily ($n = 365$) and $r = 0.0315$, $EAR_4=(1+\frac{0.0315}{365})^{365}-1\approx1.0320 - 1=0.0320$ or $3.20%$.
Step6: Calculate EAR for Account 5
Compounded quarterly ($n = 4$) and $r = 0.0325$, $EAR_5=(1+\frac{0.0325}{4})^{4}-1\approx1.0328 - 1=0.0328$ or $3.28%$.
Answer:
B. Account 2: Interest is compounded monthly at a rate of 3.25%.