A loan. of 3,200 is obtained at 8.4% payable monthly and is due in six years. To accumulate the principle the borrower will make monthly deposits into a sinking fund which earns 7.2% interest compounded monthly. Determine the total periodic payment. If the debt had been amortized with payments equal in size to the total periodic payments, what would be the effective interest rate to the nearest 0.01% (Use a table)