The following table gives the distances between Boston, Chicago, Dallas, Los Angeles, and Miami. Each city requires 40,000 kilowatt hours (kWh) of power, and Chicago, Dallas, and Miami are capa- ble of producing 70,000 kWh. Assume that shipping 1,000 kWh over 100 miles costs $4. From where should power be sent to minimize the cost of meeting each city's demand?

Resolve this chapter's example, assum ing that demand in the West region iın creases to 13,000.

Boston Chicago Dallas Los Angeles Miami Chicago 983 1205 2112 1390 Dallas 1815 1205 801 1332 Miami 1539 1390 1332 2757