Your cousin Ray borrows 1400 dollars now, repays 900 dollars in two years, and then borrows 1100 dollars in another three years, all at nominal rates of interest of 11.5 percent convertible quarterly. Your other cousin Jay borrows 1600 dollars tt years from now at the same interest rate. If the present value of both of your cousin's debts is the same, what is tt? (Assume compound interest at all times.)