The city of Valley View, California, is considering various proposals regarding the disposal of used tires. All proposals involve shredding, but the benefits differ in each plan. An incremental B/C analysis was initiated, but the engineer conducting the study left recently. Using a 20-year study period and an interest rate of 8% per year,

(a) Fill in the blanks in the incremental B/C columns of the table.

(b) Which alternative should be selected?

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AB/C Ratio When Compared with Alternative PW of Cost, B/C $ Milllon Alternatlve Ratio P 10 1.1 2.83 2.83 40 2.4 R 50 1.4 80 1.8 P.