1. Problem 10-21 (Algorithmic)

   United Express Service (UES) uses large quantities of packaging materials at its four distribution hubs. After screening potential suppliers, UES identified six vendors that can provide packaging materials that will satisfy its quality standards. UES asked each of the six vendors to submit bids to satisfy annual demand at each of its four distribution hubs over the next year. The following table lists the bids received (in thousands of dollars). UES wants to ensure that each of the distribution hubs is serviced by a different vendor. Which bids should UES accept, and which vendors should UES select to supply each distribution hub?

   Distribution Hub
   Bidder	1	2	3	4
   Martin Products	190	175	125	230
   Schmidt Materials	150	235	155	220
   Miller Containers	210	225	135	260
   D&J Burns	170	185	190	280
   Larbes Furnishings	220	190	140	240
   Lawler Depot	270	200	130	260

   Bidder	Decision	Bid
   Martin Products	Select/Reject
   Schmidt Materials	Select/Reject
   Miller Containers	Select/Reject
   D&J Burns	Select/Reject
   Larbes Furnishings	Select/Reject
   Lawler Depot	Select/Reject