Consider the case of the following annuities, and the need to compute either their expected rate of return or duration. Jorge needed money for some unexpected expenses, so he borrowed $7,204.57 from a friend and agreed to repay the loan in eight equal installments of $1,400 at the end of each year. The agreement is offering an implied interest rate of Jorge's friend, Jullo, wants to go to business school. While his father will share some of the expenses, Jullo still needs to put in the rest on his own. But Jullo has no money saved for It yet. According to his calculations, It will cost him $36,347 to complete the business program, Including tultion, cost of living, and other expenses. He has decided to deposit $4,200 at the end of every year in a mutual fund, from which he expects to eam a fixed 7% rate of return. It will take approximately years for Julio to save enough money to go to business school