A mortgage for a condominium had a principal balance of $42,200 that had to be amortized over the remaining period of 4 years. The interest rate was fixed at 3.72% compounded semi-annually and payments were made monthly.

a. Calculate the size of the payments.

b. If the monthly payments were set at $1,098, by how much would the time period of the mortgage shorten?

__year(s) __and months

c. If the monthly payments were set at $1,098, calculate the size of the final payment.