Montgomery Corporation projects an increase in sales from $1.5 million to $2 million, but it needs an additional $300,000 of current assets to support this expansion. Montgomery can finance the expansion by no longer taking discounts, thus increasing accounts payable. Montgomery purchases under terms of 1/10, net 30, but it can delay payment for an additional 25 days-paying in 55 days and thus becoming 25 days past due-without a penalty because of its suppliers' current excess capacity problems. What is the effective, or equivalent, annual cost of the trade credit?