Locations under consideration for a border patrol station have their costs estimated by the federal government. Use the B/C ratio method at an inter­est rate of 6% per year to determine which location to select, if any.


CN = 1,100,000(0.06) + 480,000
= $546,000

CS = 2,900,000(0.06) + 390,000
= $564,000

South (S) has the larger total cost

?B are the difference in disbenefits; S has lower disbenefits

?B = 70,000 – 40,000 = $30,000

?B/C = 30,000/(564,000 – 546,000)
= 30,000/18,000
= 1.67
Select location S

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