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marishachu [46]
3 years ago
15

John Blake takes out a mortgage for $80,000. There is a loan of 30 years at $600 per month. This gives a total interest of $136,

000 for 30 years. What is the APR using the formula?
Mathematics
2 answers:
yan [13]3 years ago
7 0

Answer: 8.4 %

Step-by-step explanation:

Since, the monthly payment formula,

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

Where, PV is the present value of the loan,

r is the rate per period,

n is the number of periods,

Here, PV = $ 80,000

P = $ 600

n = 12 × 30 = 360

Let r be the annual rate ,

⇒  600 = \frac{\frac{r}{12}\times 80,000}{1-(1+\frac{r}{12})^{-360}}

⇒ 600 = \frac{\frac{80000r}{12}}{1-(1+r/12)^{-360}}

⇒ 600(1-(1+\frac{r}{12})^{-360}) = \frac{80,000r}{12}

⇒ r = 0.082

Thus, the annual rate of interest = 0.082 = 8.2 %

Anika [276]3 years ago
6 0
Hi there :-)

ARP IS
((2×12×136,000)÷(80,000×361))×100
=11.30%

HOPE IT HELPS
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</span>
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