Compute the cost of not taking the following trade discounts: (Use 365 days in a year. Round the intermediate calculations to 4 decimal places. Round the final answer to 2 decimal places.)

a. 2/18, net 40.

Cost of lost discount %

b. 2/18, net 65.

Cost of lost discount %

c. 3/11, net 50.

Cost of lost discount %

d. 4/19, net 120.

Cost of lost discount %