Math Problem Statement

You have $4,500 on a credit card that charges a 17% interest rate. If you want to pay off the credit card in 5 years, how much will you need to pay each month (assuming you don't charge anything new to the card)?

Solution

To calculate how much you need to pay each month to pay off a credit card balance of $4,500 in 5 years at an interest rate of 17%, we can use the formula for the monthly payment of a loan:

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

Where:

  • MM is the monthly payment
  • PP is the principal (initial balance) = $4,500
  • rr is the monthly interest rate = annual interest rate ÷ 12 = 17%12=0.17/12=0.014167\frac{17\%}{12} = 0.17/12 = 0.014167
  • nn is the number of monthly payments = 5 years × 12 months/year = 60 months

Now, let's plug these values into the formula:

M=45000.014167(1+0.014167)60(1+0.014167)601M = \frac{4500 \cdot 0.014167 \cdot (1 + 0.014167)^{60}}{(1 + 0.014167)^{60} - 1}

Let me calculate that for you. Given values P = 4500 # Principal annual_interest_rate = 0.17 # Annual interest rate monthly_interest_rate = annual_interest_rate / 12 # Monthly interest rate n = 5 * 12 # Number of months (5 years)

Formula for monthly payment

M = (P * monthly_interest_rate * (1 + monthly_interest_rate)**n) / ((1 + monthly_interest_rate)**n - 1) MThe monthly payment required to pay off the credit card balance of $4,500 in 5 years with a 17% annual interest rate is approximately $111.84.

Would you like more details on how this calculation works, or do you have any other questions?

Here are some related questions you might find useful:

  1. How would the monthly payment change if the interest rate were 15% instead of 17%?
  2. What would happen to the total interest paid if you paid off the balance in 3 years instead of 5 years?
  3. How would making larger monthly payments affect the total amount of interest paid?
  4. What are some strategies to pay off high-interest credit card debt faster?
  5. How do credit card companies typically calculate monthly interest?

Tip: Paying off credit card debt faster can significantly reduce the total interest you end up paying, so if possible, consider increasing your monthly payments.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Loan Amortization
Interest Rate Calculations
Algebra

Formulas

M = (P * r * (1 + r)^n) / ((1 + r)^n - 1)

Theorems

Loan amortization formula

Suitable Grade Level

Grades 9-12