INDE 301 Final, Fall 2014
American University of Beirut · Engineering Economy · 3 pages
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o7/Tfils
eT. Maddah
2 hours 20 mins - closed book ENMG 400 Final Exam
Problem 1 (15 points)
ao) Texeo, the toy manufacturing company, is considering introducing 4 NeW
9 oe esta the new gadget requires purchasing a new ™
365.000. acnine could be utilized for five years, and has 4
at the end of the fi iti timated that tmenew
€ five years. If produced, it is esti MARR is 11% Per
gadget will generate ;
it eee ere: tore ss
(a) Show that the gadget project has a single rate of return (ROR).
(b) What is Toyco's ROR from the gadget project?
(c) Should Toyco introduce the new gadget?
Problem 2 (10 points)
(To take or not) An engineering firm is considering undertaken a project. The net
the present
cash flows for this project are shown below. Also shown is the-plot is ; Ss
value (PV) of the project as a function of the interest rate (i, which is not given a
a percentage value; e.g., 0. 20%). The firm's MARR is 14% per year.
pel ge e.g., 0.2 means ) i pti ad,
(a) On the basis of PW criteria, should the firm select the project?
(b) On the basis of ROR criteria, should the firm select the project?
(c) Would you undertake this project?
la 1822263
Solar
: 4 Conventional
ee Se) 3,000,000 4,500,000
desis benefits (3/year) 450,000 600,000
alvage value ($) 50,000 450,000
Life (years) 6 6
d be selected. The
Use the B/C ratio method to determine which alternative shoul
desired MARR is 10% per year.
were estimated
Problem 4 (7 points)
(Inflation) The inflation rates in Lebanon for the last three years
Unit to be as follows.
by the Economist Intelligence
E Year | 2009 2010 | 2011 _|
f___ | 9.00% | 3.98% {3.10% |
chasing power of $1 at the
y is the end of 20117
n 2009 and 2010,
n saving accounts, i
ods?
ual interest 0!
by M Bank in these peri
(b) If M bank gave a 6% ann
rates offered
what are the real interest
Engineering (CWE) has
year's projects that
groundwater. The
er year.
Problem 5 (15 points)
(CWE budgeting) The engineer at Clean Wate
established a capital investment limit of $700,000 for next
target improved recovery of highly brackish (contaminated)
using an MARR of 10%
following projects are under consideration,
Initial Annual net cash Life Salvage
Investment ($ flow (S/year) ears) | value ($)
-150,000 50,000 4 45,000
90,000 5 40,000
6 100,000
-300,000
100,000
(a) Select the project(s) that maximize(s) CWE's wealth.
lem as an integer linear program (ILP).
(b) Formulate CWE probl
s considering replacing a Car in its fleet
Problem 6 (15 points) :
(NY cabs) The New York Cab Company i
of taxi cabs. The a has been operalonal on 9 Te ot You
span of four yea can be replaced identical car How (end of year 4
of years 2, 3 or 4). The cab company’s
ears from_now (end
The market value (MV) and annual operating costs
MARR is 7% per year.
C) for the'car are as follows:
Problem 7 (15 points)
(FHA financing) It's 08/4/2012. Fly High Airlines (FHA, Lebanon's first private
airline) has just opened for business, and is considering buying a used Boeing
747 for $4.6 million. Financing for the plane will be provided as follows: (i) $1
million font the owner's Savings account paying a 3% interest rate, (ii) $1.6
million from issuing common stock with an estimated beta of 1.5, in the Lebanese
market where the market Portfolio pays 10% return and the risk-free rate of 3.5%,
(ili) $1 million from issuing an 8% dividend preferred stock, and (iv) $1 million
bank loan payable in one installment after 5 years at 7% interest. FHA’s tax rate
is 30% and the loan interest is exempt from tax.
Estimate FHA's cost of capital. What MARR should FHA use?
Problem 8 (15 points)
(Uncertain MARR) A company is considering an investment that requires an
{initial cost of $200,000,and is expected to generate($55,000 per year for 5 years,
The investment will bé termina ith no additional
cash flows. The company is not sure what MARR to use for this investment. It
estimates that the MARR will be 10% (per year) if the economy i up the next §
years{(with probability 30%)) 12% if the economy stays the same (with probability
30%)) and 15% if the economy is down (with probability 40%).
(a) What is the expected value of the company’s MARR?
(b) Should the company engage in this investment?
Bonus (3 points)
(a) Who sings for Rita?
(b) Give the date of a Thursday, after June 15, wher
(b) What's the name of the