The Axis car rental company allows its customers to pick up a rental car at one location and return it to any of its locations. Currently, two locations (1 and 2) have 16 and 18 surplus cars, respectively, and four locations (3, 4, 5, and 6) each need 10 cars. The costs of getting the surplus cars from locations 1 and 2 to the other locations are summarized in the following table.

	Cost of Transportation between Locations
	Location 3	Location 4	Location 5	Location 6
Location 1	$54	$17	$23	$30
Location 2	$24	$18	$19	$31

Because 34 surplus cars are available at locations 1 and 2, and 40 cars are needed at locations 3, 4, 5, and 6, some locations will not receive as many cars as they need. However, management wants to make sure that all the surplus cars are sent where they are needed, and that each location needing cars receives at least five. Develop a spreadsheet model for this problem and solve it using Solver.

How many cars are to be shipped from Location 2 to Location 4?