Final answer:
To compare the balances of the unsubsidized Stafford loan and the PLUS loan at the time of repayment, calculate the balance for each loan after 18 months. The PLUS loan will have a higher balance by $688.64 at the time of repayment.
Step-by-step explanation:
To compare the balances of the unsubsidized Stafford loan and the PLUS loan at the time of repayment, we need to calculate the balance for each loan after 18 months.
- For the unsubsidized Stafford loan:
- Principal amount = $6,720
- Interest rate per month = 3.99% / 12 = 0.3325%
- Number of months = 18
- Balance = Principal amount * (1 + Interest rate per month)Number of months = $6,720 * (1 + 0.003325)18 = $6,720 * 1.0653 = $7,144.18
For the PLUS loan:
- Principal amount = $7,241.17
- Interest rate per month = 4.99% / 12 = 0.4158%
- Number of months = 18
- Balance = Principal amount * (1 + Interest rate per month)Number of months = $7,241.17 * (1 + 0.004158)18 = $7,241.17 * 1.0788 = $7,832.82
Therefore, the PLUS loan will have a higher balance by $688.64 at the time of repayment.