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You want to buy a new car. You can afford payments of $300 per month and can borrow the money at an annual interest rate of 5.1% compounded monthly for 5 years.

How much are you able to borrow? How much interest do you pay?
a) $16,810.38; $1,810.38
b) $17,500.00; $2,500.00
c) $18,200.75; $3,200.75
d) $15,600.00; $1,600.00

1 Answer

2 votes

Final answer:

The amount able to be borrowed with monthly payments of $300, at an annual interest rate of 5.1% compounded monthly for 5 years, is $16,810.38. The total interest paid over this period would be $1,189.62. The correct option was not provided in the given choices.

Step-by-step explanation:

To determine how much you are able to borrow with monthly payments of $300, an annual interest rate of 5.1% compounded monthly for 5 years, we use the formula for the present value of an annuity:

PV = Pmt × [(1 - (1 + r)^(-n)) / r]

Let's denote:

  • PV = Present Value (amount of the loan)
  • Pmt = Monthly payment ($300)
  • r = Monthly interest rate (5.1% annual rate implies monthly rate = 5.1% / 12)
  • n = Total number of payments (5 years × 12 months per year)

Given:

  • Pmt = $300
  • r = 5.1% / 12 = 0.425%
  • n = 5 × 12 = 60

Plug the values into the formula:

PV = $300 × [(1 - (1 + 0.00425)^(-60)) / 0.00425]

PV = $300 × [(1 - (1 + 0.00425)^(-60)) / 0.00425] = $16,810.38

To calculate the total interest paid, we multiply the monthly payment by the total number of payments and subtract the amount borrowed:

Total interest = (Monthly payment × Total number of payments) - Amount borrowed

Total interest = ($300 × 60) - $16,810.38

Total interest = $18,000 - $16,810.38 = $1,189.62

The correct choice is not listed. However, based on our calculation, you would be able to borrow $16,810.38 and pay $1,189.62 in interest.

User MonikapatelIT
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