Solutions for Engineering Economy, 9th Edition by Blank (All Chapters included)

Engineering Economy
9th Edition by Leland Blank



Complete Chapter Solutions Manual
are included (Ch 1 to 19)




** Immediate Download
** Swift Response
** All Chapters included
** Excel Solutions included

,Table of Contents are given below



1) Foundations of Engineering Economy

2) Factors: How Time and Interest Affect Money

3) Combining Factors and Spreadsheet Functions

4) Nominal and Effective Interest Rates

5) Analysis Using Present Worth and Future Worth Values

6) Annual Worth Analysis

7) Rate of Return Analysis: One Project

8) Rate of Return Analysis: Multiple Alternatives

9) Benefit/Cost Analysis and Public Sector Economics

10) Project Financing and Noneconomic Attributes

11) Replacement and Retention Decisions

12) Independent Projects with Budget Limitation

13) Breakeven and Payback Analysis

14) Effects of Inflation

15) Cost Estimation and Indirect Cost Allocation

16) Depreciation and Depletion Methods

17) After-Tax Economic Analysis

18) Sensitivity Analysis and Staged Decisions

19) Decision Making under Risk

,Solutions Manual organized in reverse order, with the last chapter displayed
first, to ensure that all chapters are included in this document.
(Complete Chapters included Ch19-1)

Engineering Economy, 9th edition
Leland Blank and Anthony Tarquin

Chapter 19
Decision Making under Risk

Certainty, Risk, and Uncertainty
19.1 (a) Discrete
(b) Discrete
(c) Continuous
(d) Continuous
(e) Discrete

19.2 (a) Continuous (assumed) and uncertain
(b) Discrete with risk
(c) Two variables: first is discrete and certain at $800; second is continuous for ≥ $800, but
uncertain (at this point)
(d) Discrete with risk
(e) Discrete and certain

19.3 Needed or assumed information to calculate an expected value:
1. Treat output as discrete or continuous variable
2. If discrete, center points on cells, e.g., 8000, 15,000, and 18,000 units per week
3. Probability estimates for < 10,000 and /or > 20,000 units per week

Probability and Distributions
19.4 In $ million units,
E  damage   19  0.35  41 0.36   97  0.20   210  0.09 
 $59.71 million

19.5 Determine the probability values for C
C 0 1 2 3 4 ≥5
P  C 0.12 0.56 0.26 0.032 0.022 0.006



(a) P  C  0 or 1  P  C  0  P  C  1  0.12  0.56  0.68  68%
(b) P  C  1 or 2  0.56  0.26  0.82 82%
(c) P  C  3  P  C  4  P  C  5  0.022  0.006  0.028  2.8%

, 19.6 (a) Discrete as shown
(b) E  RI   6000  0.10   8500  0.21  9500  0.32   10,500  0.24   12,500  0.09 
 15,500  0.04 
 $9690
(c) P  RI  10,500   P  RI  10,500   P  RI  15,500 
 0.24  0.09  0.04
 0.37  37% 
(d) Plot shown for observed values of Royalty Income, RI




19.7 (a) Calculate probabilities and plot the distribution. Using a spreadsheet, the result is:

Expense Number
range of Probability,
midpoint, months P(E)
E, $1000
5 2 2/36 = 0.056
15 5 5/36 = 0.139
25 8 8/36 = 0.222
35 7 7/36 = 0.194
45 6 6/36 = 0.167
55 5 5/36 = 0.139
65 3 3/36 = 0.083
Total 36 1.000

(b) Can use months or probabilities; using probabilities

Let E i = midpoint range i = 1, 2, …, 9. The $45,000 midpoint includes $40,000

P  E  $40,000   0.167  0.139  0.083  0.389 38.9%
Using months, P  E  $40,000   6  5  3 /36  0.389 38.9%