A highway contractor is considering buying a new trench excavator that costs $120000 and can dig a 1-metre-wide trench at the rate of 5 metres per hour. With the machine adequately maintained, its production rate will remain constant for the first 1200 hours of operation and then decrease by 0.5 metres per hour each year. The excavator is expected to dig 2 kilometres each year. Maintenance and operating costs will be $15 per hour. The excavator has a CCA rate of 30%. At the end of five years, the excavator will be sold for $32000. Assuming that the contractor's marginal tax rate is 34% per year, determine the annual after-tax cash flow. Please use MARR=0% for this question. Year 0 1 2 3 Cash $ $ $ flow Net Present Worth (MARR) = $ Net Annual Worth (MARR)=$ IRR= % A 4

ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN:9780190931919
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Chapter1: Making Economics Decisions
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A highway contractor is considering buying a new trench excavator that costs
$120000 and can dig a 1-metre-wide trench at the rate of 5 metres per hour.
With the machine adequately maintained, its production rate will remain
constant for the first 1200 hours of operation and then decrease by 0.5 metres
per hour each year. The excavator is expected to dig 2 kilometres each year.
Maintenance and operating costs will be $15 per hour. The excavator has a
CCA rate of 30%. At the end of five years, the excavator will be sold for
$32000. Assuming that the contractor's marginal tax rate is 34% per year,
determine the annual after-tax cash flow. Please use MARR=0% for this
question.
Year
0
1
2
3
Cash
$
$
$
flow
Net Present Worth (MARR) = $
Net Annual Worth (MARR)=$
IRR=
%
A
4
Transcribed Image Text:A highway contractor is considering buying a new trench excavator that costs $120000 and can dig a 1-metre-wide trench at the rate of 5 metres per hour. With the machine adequately maintained, its production rate will remain constant for the first 1200 hours of operation and then decrease by 0.5 metres per hour each year. The excavator is expected to dig 2 kilometres each year. Maintenance and operating costs will be $15 per hour. The excavator has a CCA rate of 30%. At the end of five years, the excavator will be sold for $32000. Assuming that the contractor's marginal tax rate is 34% per year, determine the annual after-tax cash flow. Please use MARR=0% for this question. Year 0 1 2 3 Cash $ $ $ flow Net Present Worth (MARR) = $ Net Annual Worth (MARR)=$ IRR= % A 4
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