Compute the cost of not taking the following cash discounts. (Use a 360-day year. Do not round intermediate calculations. Input your final answers as a percent rounded to 2 decimal places.) Cost of Lost Discount

a. 2/17, net 55. %

b. 2/15, net 55. %

c. 3/14, net 30. %

d. 4/13, net 190. %