Calculate an equivalent annual income stream for 20 years based on the following income stream received over 30 years assuming an interest rate of

Calculate an equivalent annual income stream for 20 years based on the following income stream received over 30 years assuming an interest rate of 10% per annum compounded annually (in other words, convert the stream of payments over 30 years into a stream of payments over 20 years) :

 Yrs 1-15             $15,000pa

 Years 16-20            $20,000pa