Question

In: Economics

An industrial engineer is considering two assets to be purchased by a company. Asset A will...

An industrial engineer is considering two assets to be purchased by a company. Asset A will have an initial cost of $90,000, an annual operating and maintenance cost of $32,000, and a $6,000 salvage value. Asset B will have a first cost of $135,000, an annual operating and maintenance cost of $25,000, and a $17,500 salvage value. Which one should be selected? Use a 15-year study period and an annual interest rate of 8%. Draw the cash flow diagrams. Always use factor notation.

Solutions

Expert Solution

Alternative 1 :

Year Investment ($) Annual Expenses ($) Salvage ($) PV Factor PV ($)
      -                  -90,000          1.000
       1                -90,000                           -32,000             6,000          0.926    1,07,407.407
       2                -90,000                           -32,000             6,000          0.857        99,451.303
       3                -90,000                           -32,000             6,000          0.794        92,084.540
       4                -90,000                           -32,000             6,000          0.735        85,263.463
       5                -90,000                           -32,000             6,000          0.681        78,947.651
       6                -90,000                           -32,000             6,000          0.630        73,099.677
       7                -90,000                           -32,000             6,000          0.583        67,684.886
       8                -90,000                           -32,000             6,000          0.540        62,671.191
       9                -90,000                           -32,000             6,000          0.500        58,028.880
     10                -90,000                           -32,000             6,000          0.463        53,730.445
     11                -90,000                           -32,000             6,000          0.429        49,750.412
     12                -90,000                           -32,000             6,000          0.397        46,065.196
     13                -90,000                           -32,000             6,000          0.368        42,652.959
     14                -90,000                           -32,000             6,000          0.340        39,493.481
     15                -90,000                           -32,000             6,000          0.315        36,568.038
   9,92,899.528

Alternative 2 :

Year Investment ($) Annual Expenses ($) Salvage ($) PV Factor PV ($)
      -               -1,35,000          1.000
       1             -1,35,000                           -25,000           17,500          0.926      1,31,944.444
       2             -1,35,000                           -25,000           17,500          0.857      1,22,170.782
       3             -1,35,000                           -25,000           17,500          0.794      1,13,121.094
       4             -1,35,000                           -25,000           17,500          0.735      1,04,741.754
       5             -1,35,000                           -25,000           17,500          0.681         96,983.106
       6             -1,35,000                           -25,000           17,500          0.630         89,799.172
       7             -1,35,000                           -25,000           17,500          0.583         83,147.381
       8             -1,35,000                           -25,000           17,500          0.540         76,988.316
       9             -1,35,000                           -25,000           17,500          0.500         71,285.478
     10             -1,35,000                           -25,000           17,500          0.463         66,005.072
     11             -1,35,000                           -25,000           17,500          0.429         61,115.807
     12             -1,35,000                           -25,000           17,500          0.397         56,588.711
     13             -1,35,000                           -25,000           17,500          0.368         52,396.954
     14             -1,35,000                           -25,000           17,500          0.340         48,515.698
     15             -1,35,000                           -25,000           17,500          0.315         44,921.943
12,19,725.713
Cash Flow Diagrams for comparison between both alternatives

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