he following transportation table shows the cost of shipping one unit from each source to each destination in the upper right$-$hand corne each cell, as well as the supply capacities and demand requirements:

Destination

Source

Boston

Albany

Dallas

Supply

Nashville

$5,000$

Portland

$4\mathrm{.}000$

Kansas City

L

$6,000$

Dem and

$4,000$

$5,500$

$5\mathrm{.}500$

$15,000$

The optimal solution is:

Boston

$4000$

Source

Nashville Portland

Kansas City

The total cost of the shipping plan is:

Destination

Albany

$1000$

$0$

$4500$

Dallas

$4000$