Math Problem Statement

Use

PMT equals StartStartFraction Upper P left parenthesis StartFraction r Over n EndFraction right parenthesis OverOver 1 minus left parenthesis 1 plus StartFraction r Over n EndFraction right parenthesis Superscript negative nt EndEndFraction

to determine the regular payment​ amount, rounded to the nearest dollar. Your credit card has a balance of

​$4800

and an annual interest rate of

18

​%.

With no further purchases charged to the card and the balance being paid off over

three

​years, the monthly payment is

​$174

​,

and the total interest paid is

​$1464

.

You can get a bank loan at

10.5

​%

with a term of

four

years. Complete parts ​(a) and ​(b) below.

Question content area bottom

Part 1

a. How much will you pay each​ month? How does this compare with the​ credit-card payment each​ month? Select the correct choice below and fill in the answer boxes to complete your choice.

​(Do not round until the final answer. Then round to the nearest dollar as​ needed.)

A.

The monthly payments for the bank loan are approximately

​$enter your response here

.

This is

​$enter your response here

more than the monthly​ credit-card payments.

B.

The monthly payments for the bank loan are approximately

​$enter your response here

.

This is

​$enter your response here

less than the monthly​ credit-card payments.

Solution

To determine the monthly payment for the bank loan, we will use the PMT formula:

PMT=P(rn)1(1+rn)nt\text{PMT} = \frac{P \left( \frac{r}{n} \right)}{1 - \left( 1 + \frac{r}{n} \right)^{-nt}}

Where:

  • PP is the loan amount (in this case, $4800).
  • rr is the annual interest rate (10.5% = 0.105).
  • nn is the number of payments per year (monthly payments, so n=12n = 12).
  • tt is the loan term in years (4 years).

Let's calculate the monthly payment (PMT):

  1. P=4800P = 4800
  2. r=0.105r = 0.105
  3. n=12n = 12
  4. t=4t = 4

Substituting into the formula:

PMT=4800(0.10512)1(1+0.10512)12×4\text{PMT} = \frac{4800 \left( \frac{0.105}{12} \right)}{1 - \left( 1 + \frac{0.105}{12} \right)^{-12 \times 4}}

Let's calculate the monthly payment step by step.The monthly payment for the bank loan is approximately $123.

Now, let's compare this with the monthly credit card payment of $174.

Since $123 is less than $174, we'll calculate the difference:

174123=51174 - 123 = 51

So, the bank loan payment is $51 less than the monthly credit card payment.

Therefore, the correct option is:

B. The monthly payments for the bank loan are approximately $123. This is $51 less than the monthly credit card payments.

Would you like further details or have any questions?

Here are 5 related questions to expand on this:

  1. How does the total interest paid over the bank loan term compare to the credit card interest?
  2. What is the total amount paid over the 4-year loan term?
  3. What would happen to the monthly payments if the loan term was reduced to 3 years?
  4. How much would the monthly payment change if the interest rate were 12% instead of 10.5%?
  5. Can making additional payments to the loan reduce the total interest paid?

Tip: A longer loan term generally results in lower monthly payments but higher total interest paid over time.

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Math Problem Analysis

Mathematical Concepts

Financial Mathematics
Annuities
Loan Payments

Formulas

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

Theorems

Loan Payment Calculation
Compound Interest Formula

Suitable Grade Level

Grades 10-12