You are thinking of purchasing a house. The house costs $350,000. You have $50,000 in cash that you can use as a down payment on the house, but you need to borrow the rest of the purchase price. The bank is offering a 30-year mortgage that requires monthly payments and has an APR of 6% per year. What will your monthly payment be if you take this mortgage? how much interest is paid off in your first mortgage payment?

Answer :

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Answer:

Monthly repayment (P)                   = $1,798.65

Interest Paid off in First Mortgage  = $107,919.09

Explanation:

Monthly repayment (P) = rA / [1 − (1+r)^-n]

where

                                A = Loan Amount

                                 r = monthly interest rate

                                n = loan duration in months

                               A = House Cost - down payment

                                   = $350,000 - $50,000 = $300,000

                                 r = 6% = 6%/12 = 0.005

                                n = 30-years = 30 x 12 = 360 months

Monthly repayment (P) = 0.005($300,000)/ [1 − (1+0.005)^-360]

Monthly repayment (P) = $1,500/ [1 − (1.005)^-360]

Monthly repayment (P) = $1,500/ [1 − 0.166041928]

Monthly repayment (P) = $1,500/ 0.833958072

Monthly repayment (P) = $1,798.651575

Monthly repayment (P) = $1,798.65

To Calculate Interest Paid off in First Mortgage Payment

if there is no down payment

Loan Amoun will be $350,000

Monthly repayment (P)  = rA / [1 − (1+r)^-n]

Monthly repayment (P)  = 0.005($350,000)/ [1 − (1+0.005)^-360]

 Monthly repayment P) = $1,750/ [1 − (1.005)^-360]

Monthly repayment (P)  =  $1,750/ [1 − 0.166041928]

Monthly repayment (P)  =  $1,750/ 0.833958072

Monthly repayment (P)  = $2,098.426838

Monthly repayment (P)  = $2,098.43

Total Payment if loan is $350,000 =  $2,098.426838 x 360 = $755,433.6617

Total Payment if loan is $300,000 =  $1,798.651575 x 360   = $647,514.5670

Interest Paid off in First Mortgage

Payment                       = $755,433.6617 - $647,514.5670 = $107,919.0947

                                     = $107,919.09

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