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FORTY POINTS PLEASE HELP TIMED TEST
Elliot is graduating from college in six months, but he will need a loan in the amount of $4,850
for his last semester. He may either receive an unsubsidized Stafford Loan with an interest rate
of 6.8%, compounded monthly, or his parents may get a PLUS Loan with an interest rate of
7.8%, compounded monthly. The Stafford Loan has a grace period of six months from the time
of graduation. Which loan will have a higher balance and by how much at the time of
repayment?

Respuesta :

The Stafford Loans are govt federal loans, which implies you're borrowing money from us Department of Education directly. It has a low guaranteed return, so your payments won't go up if interest rates go up, and the following computation can be used:

Calculating the first Loan:  

[tex]\to \bold{\$4,850 \times (1+\frac{0.068}{12})^{12}}\\\\\to \bold{\$4,850 \times (1+0.005)^{12}}\\\\\to \bold{\$4,850 \times (1.005)^{12}}\\\\\to \bold{\$4,850 \times 1.061}\\\\\to \bold{\$5,145.85}\\\\[/tex]

Calculating the second Loan:

[tex]\to \bold{\$4,850 \times (1+\frac{0.078}{12})^{12}}\\\\\to \bold{\$4,850 \times (1+0.0065)^{12}}\\\\\to \bold{\$4,850 \times (1.0065)^{12}}\\\\\to \bold{\$4,850 \times 1.080}\\\\\to \bold{\$5238}\\\\[/tex]

Calculating the difference:

[tex]\to \bold{5238-5145}\\\\\to \bold{93}[/tex]

Therefore, the second loan has a higher balance that is "93".

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