Math Problem Statement

Assume you need a $98,000.00 loan for a home. Compute the monthly payment for each option. Assume that the loans are fixed rate and that closing costs are the same in both cases. Round to the nearest penny.

Option 1: a 30 year-loan at an APR of 6.25%

Option 2: a 15 year-loan at an APR of 5.5%

Solution

To calculate the monthly payments for each option, we can use the formula for monthly mortgage payments:

M=P×r(1+r)n(1+r)n1M = P \times \frac{r(1 + r)^n}{(1 + r)^n - 1}

Where:

  • MM is the monthly payment,
  • PP is the loan amount (in this case, $98,000),
  • rr is the monthly interest rate (annual interest rate divided by 12),
  • nn is the total number of payments (loan term in years multiplied by 12).

Let's calculate the monthly payments for each option:

Option 1: 30-year loan at 6.25% APR

  • Loan amount (PP) = 98,000
  • Annual interest rate = 6.25%
  • Monthly interest rate (rr) = 6.25%12=0.0520833%\frac{6.25\%}{12} = 0.0520833\%
  • Loan term = 30 years, so the number of payments (nn) = 30 × 12 = 360

Option 2: 15-year loan at 5.5% APR

  • Loan amount (PP) = 98,000
  • Annual interest rate = 5.5%
  • Monthly interest rate (rr) = 5.5%12=0.0458333%\frac{5.5\%}{12} = 0.0458333\%
  • Loan term = 15 years, so the number of payments (nn) = 15 × 12 = 180

I'll calculate the monthly payments for both options.The monthly payments for each option are:

  • Option 1: 30-year loan at 6.25% APR → $603.40 per month
  • Option 2: 15-year loan at 5.5% APR → $800.74 per month

Would you like further details on how these calculations were made, or do you have any questions?

Here are 5 related questions for exploration:

  1. What is the total interest paid over the life of each loan?
  2. How does a 20-year loan compare to the 15- and 30-year options?
  3. How much would you save in total payments by choosing the 15-year loan?
  4. What if the APR for the 30-year loan was reduced to 5.5%?
  5. How would a different loan amount (e.g., $150,000) affect the monthly payments?

Tip: Shorter loan terms usually have higher monthly payments but lower total interest paid over time.

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Math Problem Analysis

Mathematical Concepts

Loan Amortization
Interest Rates
Monthly Payments

Formulas

M = P * (r * (1 + r)^n) / ((1 + r)^n - 1) where M is the monthly payment, P is the loan amount, r is the monthly interest rate, and n is the number of payments.

Theorems

Loan Amortization Formula

Suitable Grade Level

College Level Finance or Advanced High School Mathematics