Med Ltd$.$ has just renegotiated new credit terms with their supplier of $3/10$ net $60.$ The company, however, does not have the $$40,000$ on hand to take advantage of the discount and is thinking of borrowing the funds from one of its banks. Scotia Bank will lend the company the funds for $20$ days at a cost of $$400$ while TD Bank offers a discounted loan for $20$ days at a cost of $$320.$