Ruben invested $1800 per year in an IRA each year for 9 years earning 8% compounded annually. At the end of 9 years he ceased the IRA payments, but continued to invest his accumulated amount at 8% compounded annually for the next 3 years.

a) What was the value of his IRA at the end of 9 years?

b) What was the value of the investment at the end of the next 3 years?