Refer to Problem 11-11. The best estimate for the reduction of labor hours for the new system

Question:

Refer to Problem 11-11. The best estimate for the reduction of labor hours for the new system is 17% (compared with the used system). Investigate how sensitive the decision is to 

(a) changes in the MARR,
(b) changes in the market value of the new system, and
(c) the productivity improvement of the new system. Graph your results.


Data from Problem 11-11:

A large city in the mid-West needs to acquire a street-cleaning machine to keep its roads looking nice year round. A used cleaning vehicle will cost $85,000 and have a $20,000 market (salvage) value at the end of its five-year life. A new system with advanced features will cost $150,000 and have a $40,000 market value at the end of its five-year life. The new system is expected to reduce labor hours compared with the used system. Current street-cleaning activity requires the used system to operate 8 hours per day for 20 days per month. Labor costs $50 per hour (including fringe
benefits), and MARR is 12% per year.

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Related Book For  book-img-for-question

Engineering Economy

ISBN: 978-0133439274

16th edition

Authors: William G. Sullivan, Elin M. Wicks, C. Patrick Koelling

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