A town in northern Colorado is planning on investing in a water purification system. Three mutually exclusive systems have been proposed, and their capital investment costs and net annual benefits are the following (salvage values are negligible).

If the town€™s MARR is 10% per year, use the B€“C ratio method to determine which system is best.

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System EOY A -$160,000 -$245,000 -$200,000 80,000 70,000 60,000 50,000 120,000 100,000 80,000 60,000 80,000 80,000 80,000 80,000 3 4