Engineering Economy (17th Edition)
Engineering Economy (17th Edition)
17th Edition
ISBN: 9780134870069
Author: William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
Publisher: PEARSON
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Chapter 2, Problem 49SE
To determine

The economical inulation amount.

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The fixed cost for a steam line per meter of pipe is $450X + $50 per year. Thecost for loss of heat from the pipe per meter is $4.8/X1/2 per year. Here, Xrepresents the thickness of insulation in meters, and X is a continuous designvariable. Solve, a. What is the optimum thickness of the insulation? b. How do you know that your answer in Part (a) minimizes total cost per year? c. What is the basic trade-off being made in this problem?
Please no written by hand solutions  One area of concern when it comes to Starlink is the cost. For example, at the beginning of February 2023, FiberOne, a broadband internet provider in Nigeria, was providing internet with speeds of up to 500Mbps, which is fast. The installation fee was N32,231 (about US$70) and the monthly subscription cost around N100,000 (US$220). Starlink in Nigeria, meanwhile, costs about N276,000 (US$599) once- off for the kit and installation, then charges a monthly subscription fee of about [N19,800] (US$43). Starlink is cheaper in the long term than both fibre optic and mobile internet providers. But can an average rural Nigerian household with a monthly income of less than N28,000 (US$60) afford it? Given that average incomes are similarly low in most rural and remote parts of Africa, there's a risk that Starlink's targeted users on the continent won't be able to use the service. The reason that Starlink is able to charge a lower monthly price for their…
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