Mary arranges to repay a $1000 bank loan in 10 equal payments at a 10% effective annual interest rate. immediately after her third payment, she borrows another $500 also at 10% per year. when she borrows the $500 she talks the banker into eating her repay the remaining debt of the first loan and the entire amount of the second loan in 12 equal payments the first of these 12 would be made one year after she receives the $500. compute the amount of reach of the 12 payments