Using the monthly payment formula, it is found that the balance of the plan is of $26,731.23.
It is given by:
[tex]A = P\frac{\frac{r}{12}\left(1 + \frac{r}{12}\right)^n}{\left(1 + \frac{r}{12}\right)^n - 1}[/tex]
In which:
The parameters for this problem are given as follows:
A = 144, r = 0.06, n = (68 - 24) x 12 = 528.
Then:
r/12 = 0.06/12 = 0.005.
[tex]A = P\frac{\frac{r}{12}\left(1 + \frac{r}{12}\right)^n}{\left(1 + \frac{r}{12}\right)^n - 1}[/tex]
[tex]144 = P\frac{0.005(1 + 0.005)^{528}}{(1 + 0.005)^{528} - 1}[/tex]
[tex]P = 144\frac{(1 + 0.005)^{528} - 1}{0.005(1 + 0.005)^{528}}[/tex]
P = $26,731.23.
More can be learned about the monthly payment formula at https://brainly.com/question/26476748
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