Interest paid is $90.
Total finance charge is $110.
APR is 14.7%
Karla Kaufmann borrowed $750 at 12 percent for one year.
She paid a $20 processing fee.
Thus the interest paid is = [tex]\frac{12}{100}\times750= 90[/tex] dollars
And the total finance charge (the interest plus the processing fee) will be=
[tex]90+20=110[/tex] dollars
Also, to the nearest tenth, the APR is :
[tex]\frac{110}{750}\times100 =14.67[/tex] ≈ 14.7%