Barrett eSellers is an online retail store offering a variety of products. As a part of its business model, it offers free returns. The returns

are processed at the Returns Processing Facility $($RPF$)$ near one of the air freight hubs. The RPF checks the returns for documentation

$($receipt and so on$)$ and condition of the returned item and determines the disposition of the item $($return to stock, resale as a "used"

item, or trash$).$ The system at RPF is designed so that all returns that start the process on any given day are processed that day.

During May, the RPF processed $37,500$ returns with a dollar sales value of $$3,675,000.$ The costs incurred at the RPF during May were

as follows.

HELP NEEDED WITH PART A AND B

a$.$ Compute the cost per return for May at the RPF$.$

Note: Round your answer to $2$ decimal places.

b$.$ Compute the cost per dollar sales value for items returned for May at the RPF$.$

Note: Round your answer to $2$ decimal places.

a$.$ Cost per return for May

b$.$ Cost per dollar sales value for items returned for May