A $200,000 mortgage amortized over 25 years with monthly payments at an interest rate of 6% compounded semi-annually). Suppose you made a double up payment every six months in other words every six months you make an extra payment) and at the end of each year you make a lump sum payment of $3000. How long would it now take to pay off the mortgage calculate the number of years)? How much interest is paid over the life of the mortgage? A $200,000 mortgage amortized over 25 years with monthly payments at an interest rate of 6% compounded semi-annually). Suppose you made a double up payment every six months in other words every six months you make an extra payment) and at the end of each year you make a lump sum payment of $3000. How long would it now take to pay off the mortgage calculate the number of years)? How much interest is paid over the life of the mortgage