Janet wants to borrow $10 000 to be repaid over 10 years. From one source, money can be borrowed at 10% compounded annually and amortized by annual payments. From a second source, money can be borrowed at 9% compounded annually if only the interest is paid annually and the principal repaid at the end of 10 years. If the second source is used, a sinking fund will be established by annual deposits that accumulate at 7% compounded quarterly. How much can Janet save annually by using the better plan?