Problem 3. For the mixed stream of cash flows shown in the following table, Year Cash flow stream $27,000 $22,500 $18,000 $ 9,000 $ 4,500 Determine the future value at the end of the final year if deposits are made into an account paying annual interest of 8%, assuming that no withdrawals are made during the period and that the deposits are made: a. At the end of each year. b. At the beginning of each year