A bank offers your firm a revolving credit arrangement

for up to $60 million at an interest rate of 1.90 percent per quarter. The bank also

requires you to maintain a compensating balance of 6 percent against the unused

portion of the credit line, to be deposited in a non-interest-bearing account. Assume you have a short-term investment account at the bank that pays 1.50 percent per quarter, and assume that the bank uses compound interest on its

revolving credit loans.

a. What is your effective annual interest rate (an opportunity cost) on the revolving credit arrangement if your firm does not use it during the year?

b. What is your effective annual interest rate on the lending arrangement if you

borrow $40 million immediately and repay it in one year?