Anna's 300,000 loan is amortized by equal monthly payments for 25 years, starting one month from the time of the loan at a nominal rate of 6% convertible monthly.
a) What is the monthly payment?
b) What is the total of monthly payments over the last 10 years of the loan?
c) What is the loan balance after the first 15 years?
d) What is the total interest paid during the last 10 years of the loan?