Don Stone obtained an $8.500 installment loan at 14% for 42 months. The loan's balance after 26 payments is 3.733.55. What is the interest for payment 27?

Given:
The unpaid balance after the 26 payments is $3,733.55.
Therefore, the interest for payment 27 will be
[tex]14\text{ \% of \$3733.55}[/tex]Evaluating
[tex]\frac{14}{100}\times3733.55=0.14\times3733.55=522.697\approx522.70(nearest\text{ cent)}[/tex]Hence, the interest for payment 27 is $522.70.