"A manufacturing engineer is choosing between two types of HVAC systems with the following costs and savings. The engineer must choose one of the two HVAC systems. The firm's MARR is 15%. What is the IRR of the system that the engineer should choose? Enter your answer as a percentage between 0 and 100 rounded to the nearest tenth of a percent. Caution: the system with the larger IRR might not be the system that should be chosen! For Model 1:

"A manufacturing engineer is choosing between two types of HVAC systems with the following costs and savings. The engineer must choose one of the two HVAC systems. The firm's MARR is 15%. What is the IRR of the system that the engineer should choose? Enter your answer as a percentage between 0 and 100 rounded to the nearest tenth of a percent. Caution: the system with the larger IRR might not be the system that should be chosen! For Model 1:

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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A firm is considering which of twodevices to install to reduce costs. Both devices have useful lives of 5 years and no salvage value. Device A costs $10,000 and can be expected to result in $3000 savings annually. Device B costs $13,500 and will provide cost savings of $3000 the first year but will increase $500 annually, making the second-year savings $3500, the third-year savings $4000, and so forth. For a 7% MARR, which device should the firm purchase?