145k views
4 votes
A homeowner is financing the cost of new windows. Two lenders have approved the homeowner for a $12,000 loan. The terms of each loan are:

Offer 1: 4.5% annual simple interest, with a total account balance of $14,430 after a 54-month term
Offer 2: 3.75% annual interest compounded monthly for a 66-month term

Assuming no payments are made, what is the difference in the account balances at the end of the loan terms. Round your answer to the nearest penny.

1 Answer

2 votes

Final answer:

The difference between the final account balance for the two loan offers is $275.74, with Offer 2 being the more expensive option due to interest being compounded monthly.

Step-by-step explanation:

To find the difference in the account balances at the end of the loan terms for the two offers, we need to calculate the final amounts for each option and then subtract one from the other.

Offer 1: This is a simple interest loan. The formula to calculate the total amount for a simple interest loan is:

A = P(1 + rt)

However, in this case, we already have the final account balance provided, which is $14,430.

Offer 2: This loan uses compounded interest monthly. The formula for compound interest is:

A = P(1 + −/p)^(nt)

Where:

  • P = principal amount ($12,000)
  • r = annual interest rate (3.75% or 0.0375)
  • n = number of times interest is compounded per year (12)
  • t = time the money is invested or borrowed for, in years (66 months / 12 months per year = 5.5 years)

Using these values, we calculate:

A = $12,000(1 + 0.0375/12)^(12*5.5)

A = $12,000(1 + 0.003125)^(66)

A = $12,000(1.003125)^66

A = $12,000*1.2254779

A = $14,705.74

The difference in the total amount at the end of each term is $14,705.74 - $14,430 = $275.74.

User Gewure
by
8.3k points