. Ten years ago, Jack and Jill took out a $500,000 mortgage to buy their new house. - The mortgage was a 20-year, 10% mortgage with monthly payments. Today their bank offers similar mortgage at 8% interest . however, when the young couple went to the bank to inquire about the possibility of refinancing the reminder of their mortgage with a 10-year,8% mortgage, they were informed that bank has a $15,000 "exit fee" for refinancing. . Should they still refinance the mortgage