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 30P
A company uses a variable speed honing machine to increase the smoothness of the inside walls of hydraulic jacks. The hone uses acid-dipped “brushes” to perform this operation. Increasing the speed of the machine results in faster operation, but reduces brush life. A single “brush” costs $90.00 and can be refurbished several times before its useful life is over. The number of refurbishings depends on the honing speed. Each refurbishing costs $30.00. Assume a refurbished brush can smooth the same amount as a new brush, and that when purchased a new brush is ready to use. The operating cost for the hone and operator is $70.00/hr. Below are the data for operating the hone at 3 different speeds. The time required for changing brushes is incorporated into the honing rates below. Which honing speed is the most economical? Hint: find the cost per jack, not per hone or per cycle!
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Chapter 2 Solutions
Engineering Economy (17th Edition)
Ch. 2 - An experimental composite engine block for an...Ch. 2 - Given below is a numbered list of cost terms. For...Ch. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10P
Ch. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Suppose you are going on a long trip to your...Ch. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - A company uses a variable speed honing machine to...Ch. 2 - Prob. 31PCh. 2 - An automobile dealership offers to fill the four...Ch. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - Prob. 36PCh. 2 - Prob. 37PCh. 2 - Prob. 38PCh. 2 - Prob. 39PCh. 2 - Prob. 40PCh. 2 - Prob. 41PCh. 2 - Prob. 42PCh. 2 - Prob. 43PCh. 2 - Prob. 44PCh. 2 - A hot water leak in one of the faucets of your...Ch. 2 - Prob. 46PCh. 2 - Prob. 47PCh. 2 - Prob. 48SECh. 2 - Prob. 49SECh. 2 - Prob. 50CSCh. 2 - Prob. 51CSCh. 2 - What is the optimal number of units that should be...Ch. 2 - Prob. 53FECh. 2 - Prob. 54FECh. 2 - Prob. 55FECh. 2 - Prob. 56FECh. 2 - Prob. 57FECh. 2 - Prob. 58FE
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