Currently James Corporation is using a decentralized collection system whereby customers mail their checks to one of the firm’s eight regional locations. Its annual sales are $150 million. Checks are...

Currently James Corporation is using a decentralized collection system whereby customers mail their checks to one of the firm’s eight regional locations.  Its annual sales are $150 million.  Checks are deposited each business day in a local bank and the amount of the deposit is sent to the firm’s concentration bank in Dallas.  The average time between deposit in the local bank and the availability of those funds, in Dallas, to Riley is 6 days.  James has determined that the use of wire transfers would reduce the float by four days, but the transfer will cost $15.00.
If transfers will be made on each of the 250 days that banks are open, should Riley switch to the wire transfer system?
 Assume that James can earn 6% on the funds released through this more efficient transfer.