The following table shows a portion of a five-year amortization schedule.
5 year amortization schedule
loan amount or principal s 10.900.00
interest rate on loan
10.95%
extra payment to principal s
month payment principal interest balance
15 s 236.72 s 155.87s 80.85 s 8.704.27
16 s 236.72s 157.29 s 79.43s 8.546.98
17 s 236.72s 158.73s 77.99 s 8.388.25
18 s 236.72s 160.18 s 76.54s 8.228.07
19 s 236.72s 161.64s 75.08 s 8.066.43
20 s 236.72s 163.11 s 73.61s 7.903.32
what percent of the payments made were due to interest for the months shown?
a. 30.9%
b. 32.6%
c. 62.5%
d. 63.4%