Answer:
1) $330188.4
2) 62.14%
3) $569.97
Explanation:
1) Total amount which will be repaid = Amount+Total interest
 = 125000+205188.4
 = $330188.4
2) Let the percentage of total that is interest be x
Then x%×330188.4 = 205188.4
  x = 62.14%
Percentage of total that is interest = 62.14$
3) Average amount per payment for interest =

 = 

 = $569.97