Practice Calculation of Operating and Maintenance Costs - 3.3 | 21. Introduction to Defender and Challenger Equipment | Construction Engineering & Management - Vol 1
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Calculation of Operating and Maintenance Costs

3.3 - Calculation of Operating and Maintenance Costs

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is considered an operating cost?

💡 Hint: Think about daily running costs.

Question 2 Easy

What does salvage value represent?

💡 Hint: It's like the final price when selling something used.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the annual operating cost of the challenger?

90,000
135,000
100,000

💡 Hint: Look back to the initial costs mentioned.

Question 2

Is the defender's initial cost relevant in the replacement analysis?

True
False

💡 Hint: Consider which costs are current versus past.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A piece of machinery has a purchase price of 50,000 with an annual operating cost of 10,000 and salvage value of 5,000 after 4 years. If the interest rate is 6%, compute the EAC.

💡 Hint: Use formulas for Pv and annualize them.

Challenge 2 Hard

Scenario: Two machines have the following details: Machine A costs 25,000, with operating costs of 3,000, salvage at 2,000 over 5 years; Machine B costs 20,000, with 2,500 operating and 1,500 salvage value. Which machine is preferable and why, based on EAC?

💡 Hint: Focus on annualizing those costs.

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