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Talja [164]
3 years ago
15

Melanie is looking for a loan. She is willing to pay no more than an effective rate of 9.955% annually. Which, if any, of the fo

llowing loans meet Melanie’s criteria? Loan A: 9.265% nominal rate, compounded weekly Loan B: 9.442% nominal rate, compounded monthly Loan C: 9.719% nominal rate, compounded quarterly
Mathematics
2 answers:
Y_Kistochka [10]3 years ago
5 0

Answer:

Loan A and B

Step-by-step explanation:

Since, the effective annual interest rate is,

i=(1+\frac{r}{n})^n-1

Where, r is the nominal rate( in decimals) per period,

n is the number of periods,

In Loan A :

r = 9.265% = 0.09265,

n = 52,

Thus, the effective annual interest rate is,

i_1=(1+\frac{0.09265}{52})^{52}-1

=(1+0.00178173077)^{52}-1

=1.09698725072-1

=0.09698725072\approx 0.9670

\implies i_1=9.670\%

In Loan B :

r = 9.442% = 0.09442,

n = 12,

Thus, the effective annual interest rate is,

i_2=(1+\frac{0.09442}{12})^{12}-1

=(1+0.00786833)^{12}-1

=1.09861519498-1

=0.09861519498\approx 0.9862

\implies i_2=9.862\%

In Loan C :

r =9.719% = 0.09719,

n = 4,

Thus, the effective annual interest rate is,

i_3=(1+\frac{0.09719}{4})^{4}-1

=(1+0.0242975)^{4}-1

=1.10078993749-1

=0.10078993749\approx 0.10079

\implies i_3=10.079\%

Since, i_1, i_2 but i_3>9.955\%

Hence, Loan A and B meets his criteria.

Bezzdna [24]3 years ago
4 0
The answers are both loan A and loan B :)

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