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12. ALGEBRA On April 14, Mikos Souvakis borrowed $100,000 to remodel
his restaurant kitchen with a single-payment loan at 10.5% ordinary
interest. If his loan's maturity value was $104,375, when does Mikos
have to pay it back?

Sagot :

Using simple interest, it is found that Mikos has to pay it back on September 13 of the same year.

Simple Interest

Simple interest is used when there is a single compounding per time period.

The amount of money after t years in is modeled by:

[tex]A(t) = A(0)(1 + rt)[/tex]

In which:

  • A(0) is the initial amount.
  • r is the interest rate, as a decimal.

In this problem:

  • The initial amount is of A(0) = 100000.
  • The interest rate is of r = 0.105.
  • The maturity value is of A(t) = 104375.

Hence, we have to solve for t, then:

[tex]A(t) = A(0)(1 + rt)[/tex]

[tex]104375 = 100000(1 + 0.105t)[/tex]

[tex]1 + 0.105t = \frac{104375}{100000}[/tex]

[tex]1 + 0.105t = 1.04375[/tex]

[tex]0.105t = 0.04375[/tex]

[tex]t = \frac{0.04375}{0.105}[/tex]

[tex]t = 0.4166[/tex]

This is the time in years, hence in days:

0.4166 x 365 = 152 days after April 14, thus on September 13.

To learn more about simple interest, you can take a look at https://brainly.com/question/25296782