Computers Unlimited sells microcomputers to universities and colleges on the East Coast and ships them from three distribution warehouses. The firm is able to supply the following numbers of microcomputers to the universities by the beginning of the academic year:

                            

Four universities have ordered microcomputers that must be delivered and installed by the beginning of the academic year:

                             

The shipping and installation costs per microcomputer from each distributor to each university are as follows:

                            

Solve this problem by using the computer.