Math Problem Statement

Determine the monthly payment for the following loan: a ten year loan of $25,000 with an APR of 7.2% compounded monthly

Solution

To calculate the monthly payment for a loan, we can use the loan amortization formula:

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

Where:

  • MM is the monthly payment.
  • PP is the principal amount (loan amount).
  • rr is the monthly interest rate (annual interest rate divided by 12).
  • nn is the total number of payments (loan term in months).

Given:

  • Principal (PP) = $25,000
  • Annual interest rate (APR) = 7.2% or 0.072
  • Loan term = 10 years

Step 1: Calculate the monthly interest rate.

r=7.2%12=0.07212=0.006r = \frac{7.2\%}{12} = \frac{0.072}{12} = 0.006

Step 2: Calculate the total number of monthly payments.

n=10×12=120n = 10 \times 12 = 120

Step 3: Plug these values into the formula.

M=25000×0.006×(1+0.006)120(1+0.006)1201M = \frac{25000 \times 0.006 \times (1 + 0.006)^{120}}{(1 + 0.006)^{120} - 1}

Let me calculate this for you.The monthly payment for the loan is approximately $292.85.

Would you like more details or have any questions?

Here are five related questions for further exploration:

  1. How does changing the loan term affect the monthly payment?
  2. What would be the total amount paid over the life of the loan?
  3. How does compounding frequency affect the monthly payment?
  4. How much interest will you pay over the life of this loan?
  5. What happens if the interest rate increases to 8%?

Tip: When considering a loan, always factor in the total interest paid over time, not just the monthly payment.

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Math Problem Analysis

Mathematical Concepts

Loan Amortization
Interest Rate Calculation
Exponential Growth

Formulas

Loan Amortization Formula: M = (P * r * (1 + r)^n) / ((1 + r)^n - 1)
Monthly Interest Rate Calculation: r = APR / 12
Total Number of Payments: n = Loan Term (in years) * 12

Theorems

Exponential Growth in Financial Calculations

Suitable Grade Level

Grades 10-12