1) Ken will receive a $5,000 annual payment from a family trust. This will continue until Ken in 30; he is now 20. Inflation averages 4% and Ken's real MARR is 8%. If the first payment is a year from now and a total of 10 payments are to be made, what is the present worth of his remaining income from the trust?

2) What is the present worth of the total 20 payments, occurring at the end of every four months (i.e. the first payment is in four months), which are $400, $500, $600, increasing by a fixed sum. Interest is 12% nominal per year, compounded monthly.