3. A bank has two sites at which checks can be processed. Site 1 can process 9000 checks per day and site 2 can process 7000 checks per day. The bank processes three types of checks: vendor, salary, and personal. The processing costs per check depends on the site. Each day 5000 checks of each type must be processed. Formulate a balanced transportation problem to minimize the daily cost of processing checks checks/site Site 1 Site 2 Vendor $5 $3 Saary $4 $4 Personal $2 $5