Question

# You have just arranged for a \$200,000 mortgage to finance the purchase of a house. The...

You have just arranged for a \$200,000 mortgage to finance the purchase of a house. The mortgage has an 8 percent quoted rate, interest is compounded semi-annually and it calls for monthly payments for the next 20 years. What is the monthly payment?Please provide step-by-step instructions for solving the problem

#### Homework Answers

Answer #1

Annual interest rate = 8.00%
Semiannual interest rate = 4.00%

Effective annual rate = (1 + Semiannual interest rate)^2 - 1
Effective annual rate = (1 + 0.04)^2 - 1
Effective annual rate = 1.0816 - 1
Effective annual rate = 0.0816 or 8.16%

Monthly interest rate = (1 + Effective annual rate)^(1/12) - 1
Monthly interest rate = (1 + 0.0816)^(1/12) - 1
Monthly interest rate = 1.006558 - 1
Monthly interest rate = 0.006558 or 0.6558%

Amount borrowed = \$200,000
Time period = 20 years or 240 months

Let monthly payment be \$x

\$200,000 = \$x/1.006558 + \$x/1.006558^2 + … + \$x/1.006558^239 + \$x/1.006558^240
\$200,000 = \$x * (1 - (1/1.006558)^240) / 0.006558
\$200,000 = \$x * 120.722960
\$x = \$1,656.69

Monthly payment = \$1,656.69

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