Consider the following two tractors a company could purchase. The following tables provide the costs the company will incur (in thousands) in the lifetime of each tractor

	initial cost	Operating costs per year	expected life
diesel	$18000	$5000	7
gasoline	$5000	$10000	5

The transportation firm can only afford one of the tractors. The two tractors have identical production capabilities. The firm's cost of capital is 8%. Find the present value of the costs of using the two tractors.

Diesel =

Gasoline =