Question

In: Finance

Alice is concerned about the financing of a home. She saw a home selling for $120,000....

Alice is concerned about the financing of a home. She saw a home selling for $120,000. If she puts 10% down, what will her monthly payment be for a 30 year loan at the following percentages? What is the total cost of interest over the life of the loan for each assumption A, B, C, and D?

A. 8%       B. 9%       C. 10%           D. 11%

Solutions

Expert Solution

Answer A
Calculation of monthly payment on loan and total interest over the life of loan when Interest rate is 8%
We can use the present value of annuity formula to calculate monthly loan payment.
Present Value of annuity = P x {[1-(1+r)^-n]/r}
Present Value of annuity = Loan amount = Cost of house x 90% = $120000 x 90% = $108000
P = monthly loan payment = ?
r = interest rate per month =      0.0067
n = number of monthly payments = 360
108000 = P x {[1-(1+0.0067)^-360]/0.0067}
108000 = P x 136.2835
P = 792.47
Monthly Loan payment = $792.47
Total Interest over the life of loan = (Monthly Payment x Number of months) - Loan amount
Total Interest over the life of loan = ($792.47 x 360) - $108000
Total Interest over the life of loan = $1,77,287.67
Answer B
Calculation of monthly payment on loan and total interest over the life of loan when Interest rate is 9%
We can use the present value of annuity formula to calculate monthly loan payment.
Present Value of annuity = P x {[1-(1+r)^-n]/r}
Present Value of annuity = Loan amount = Cost of house x 90% = $120000 x 90% = $108000
P = monthly loan payment = ?
r = interest rate per month =      0.0075
n = number of monthly payments = 360
108000 = P x {[1-(1+0.0075)^-360]/0.0075}
108000 = P x 124.2819
P = 868.99
Monthly Loan payment = $868.99
Total Interest over the life of loan = (Monthly Payment x Number of months) - Loan amount
Total Interest over the life of loan = ($868.99 x 360) - $108000
Total Interest over the life of loan = $2,04,837.27
Answer C
Calculation of monthly payment on loan and total interest over the life of loan when Interest rate is 10%
We can use the present value of annuity formula to calculate monthly loan payment.
Present Value of annuity = P x {[1-(1+r)^-n]/r}
Present Value of annuity = Loan amount = Cost of house x 90% = $120000 x 90% = $108000
P = monthly loan payment = ?
r = interest rate per month =      0.0083
n = number of monthly payments = 360
108000 = P x {[1-(1+0.0083)^-360]/0.0083}
108000 = P x 113.9508
P = 947.78
Monthly Loan payment = $947.78
Total Interest over the life of loan = (Monthly Payment x Number of months) - Loan amount
Total Interest over the life of loan = ($947.78 x 360) - $108000
Total Interest over the life of loan = $2,33,199.83
Answer D
Calculation of monthly payment on loan and total interest over the life of loan when Interest rate is 11%
We can use the present value of annuity formula to calculate monthly loan payment.
Present Value of annuity = P x {[1-(1+r)^-n]/r}
Present Value of annuity = Loan amount = Cost of house x 90% = $120000 x 90% = $108000
P = monthly loan payment = ?
r = interest rate per month = 0.0092
n = number of monthly payments = 360
108000 = P x {[1-(1+0.0092)^-360]/0.0092}
108000 = P x 105.0063
P = 1028.51
Monthly Loan payment = $1,028.51
Total Interest over the life of loan = (Monthly Payment x Number of months) - Loan amount
Total Interest over the life of loan = ($1028.51 x 360) - $108000
Total Interest over the life of loan = $2,62,263.34

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