This document provides an overview of annual worth analysis, which is an approach for comparing investment alternatives that have different lifetimes under life-cycle cost assumptions. It defines key terms like capital recovery, annual worth, salvage value, and annual amount. It presents examples of how to calculate the annual worth of various alternatives and choose the one with the highest annual worth value. The document also discusses how to evaluate permanent investments that have an infinite lifetime by calculating their perpetual equivalent annual worth. Overall, the summary provides the essential details on how to use annual worth analysis to evaluate capital investment options.
Depreciation Accounting basic with easy examples includes
Methods of depreciation, Methods of depreciation recording, sale of asset , loss of sale of asset, profit on sale of asset, closing of asset accounting, and practical examples on depreciation methods.
Fall in the Value of a Tangible Asset i.e. Depreciation has been discussed. The reasons of such fall, Objectives of recording depreciation in Accounting has been explained. We have also considered the different methods of charging depreciation. Some useful concepts like Change in method of depreciation, Asset’s life or estimated useful life are discussed.
The presentation is about Depreciation of Assets and its methods. There are many methods for calculating Depreciation but this presentation focuses on most widely used methods- Straight line method, Written down value method and Annuity method.
Example of each method is given, which gives you an easy learning of Depreciation.
Good for Beginners and Amateurs.
1. DEPRECIATION CONCEPT OBJECTIVES CAUSES DEPRECIATION METHODS vikas vadakara
2. CONCEPT Depreciation is the cost of lost usefulness or cost of diminution of service yield from a use of fixed assets. A permanent fall in the value of fixed assets arising through wear and tear from the use of those assets in business. vikas vadakara
3. Definition “Depreciation is a measure of the wearing out, consumption or other loss of value of depreciation asset arising from use, efflux ion of time or obsolescence through technology and market changes. Depreciation is allocated so as to charge a fair proportion of the depreciable amount in each accounting period during the expected useful life of the asset. Depreciation includes amortization of assets whose useful life is predetermined.” vikas vadakara
4. objectives To calculate proper profits. To show the asset at its reasonable value To maintain the original monetary investment of the asset intact. Provision of depreciation results in some incidental advantages also. To provide for replacement of an asset. Depreciation is permitted to be deducted from profits for tax purposes. vikas vadakara
Depreciation Accounting basic with easy examples includes
Methods of depreciation, Methods of depreciation recording, sale of asset , loss of sale of asset, profit on sale of asset, closing of asset accounting, and practical examples on depreciation methods.
Fall in the Value of a Tangible Asset i.e. Depreciation has been discussed. The reasons of such fall, Objectives of recording depreciation in Accounting has been explained. We have also considered the different methods of charging depreciation. Some useful concepts like Change in method of depreciation, Asset’s life or estimated useful life are discussed.
The presentation is about Depreciation of Assets and its methods. There are many methods for calculating Depreciation but this presentation focuses on most widely used methods- Straight line method, Written down value method and Annuity method.
Example of each method is given, which gives you an easy learning of Depreciation.
Good for Beginners and Amateurs.
1. DEPRECIATION CONCEPT OBJECTIVES CAUSES DEPRECIATION METHODS vikas vadakara
2. CONCEPT Depreciation is the cost of lost usefulness or cost of diminution of service yield from a use of fixed assets. A permanent fall in the value of fixed assets arising through wear and tear from the use of those assets in business. vikas vadakara
3. Definition “Depreciation is a measure of the wearing out, consumption or other loss of value of depreciation asset arising from use, efflux ion of time or obsolescence through technology and market changes. Depreciation is allocated so as to charge a fair proportion of the depreciable amount in each accounting period during the expected useful life of the asset. Depreciation includes amortization of assets whose useful life is predetermined.” vikas vadakara
4. objectives To calculate proper profits. To show the asset at its reasonable value To maintain the original monetary investment of the asset intact. Provision of depreciation results in some incidental advantages also. To provide for replacement of an asset. Depreciation is permitted to be deducted from profits for tax purposes. vikas vadakara
Systematic Economic Analysis Technique for analysisNaganna Chetty
Ranking Methods or Incremental Methods
Present Worth
Future Worth
Annual Worth
Capitalized Worth
Discounted Payback Period
Payback Period
Incremental Methods
Internal Rate of Return
External Rate of Return
Modified Internal Rate of Return
Benefit/Cost Ratio
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1. Chapter 6 – Annual Worth Analysis
Chapter 6 – Annual Worth
Analysis
Advantages and Uses
Calculation of Capital Recovery and AW
Values
Evaluating Alternatives by Annual Worth
Analysis
Annual-Worth of a Permanent Investment
INEN 303
Sergiy Butenko
Industrial & Systems Engineering
Texas A&M University
Chapter 6 Annual Worth Analysis
1
2
Capital Recovery and AW Value
Advantages and Uses
Ideal approach for comparing alternatives with
different lives under LCM assumptions
Capital Recovery is the equivalent annual
cost of obtaining the asset plus the salvage
AW value has to be calculated for only one life
cycle
LCM comparison is implicit as,
AWLCM = AWLife
CR is a function of {P, SV, i%, and n }
AW is comprised of two components: capital
recovery for the initial investment P at a stated
interest rate (MARR) and the equivalent annual
amount A
Popular and easily understood
Results are reported in $/time period
Chapter 6 Annual Worth Analysis
Chapter 6 Annual Worth Analysis
3
An alternative usually has the following cash
flow estimates:
Initial Investment (P) – the total first cost of all
assets and services required to initiate the
alternative.
Chapter 6 Annual Worth Analysis
4
Assume P, SV and A are just the
magnitudes, to find CR:
Method I : Compute AW of the original cost
and add the AW of the salvage value
CR = - P(A|P, i, n) + SV(A|F, i, n)
Salvage Value (SV) – the terminal estimated
value of assets at the end of their useful life.
Method II : Add the present worth of the
salvage value to the original cost, then
compute the annual worth of the sum.
CR = [- P + SV(P|F, i, n)] (A|P, i, n)
Annual Amount (A) – the equivalent annual
amount; typically this is the annual operating
cost (AOC).
AW = CR – A (Note the difference from the book)
Chapter 6 Annual Worth Analysis
5
Chapter 6 Annual Worth Analysis
6
1
2. Example 6.1: A contractor purchased a used
crane for $11,000. His operating cost will be
$2700 per year, and he expects to sell it for
$5000 five years from now. What is the
equivalent annual worth of the crane at an
interest rate of 10% ?
Solution:
CR = -11,000(A/P, 10%, 5) +5000(A/F,10%,5)
AW = -11,000(A/P, 10%, 5) +5000(A/F,10%,5)
-2700
= -11,000(.2638) + 5000(.1638) – 2700
= -$4782.8
Chapter 6 Annual Worth Analysis
Example 6.2: Calculate the AW for the
following cash flow. Assume the MARR is
12% per year
Initial investment
Initial investment
Annual operating cost
Salvage value
7
Year
0
1
1-8
8
Amount
8 million
5 million
0.9 million
0.5 million
8
Chapter 6 Annual Worth Analysis
First find the capital recovery (CR)
Method I:
CR = [-8.0 - 5.0(P/F,12%,1)](A/P,12%,8) + 0.5(A/F,12%,8)
= [-8.0-5.0*(.8929)](.2013) + 0.5*(.0813)
= $-2.47 million
AW = CR - A
= -2.47 – 0.9 = $-3.37 million
Method II:
CR = [-8.0 - 5.0(P/F,12%,1) + 0.5(P/F,12%,8)](A/P,12%,8)
= [-8.0-5.0*(.8929) + 0.5*(.4039)](.2013)
= $-2.47 million
Chapter 6 Annual Worth Analysis
9
Example 6.3: The following costs are estimated for two equalservice tomato-peeling machines to be evaluated by a canning
plant manager.
Evaluating Alternatives by AW Analysis
For mutually exclusive alternatives, calculate AW
over one life cycle at the MARR
One alternative: AW≥0, MARR is met or exceeded
Two or more alternatives: Choose the alternative
with numerically largest AW value
Note that you are making a comparison over LCM to
ensure equal service
Your calculations are simplified since AW over LCM
is the same as AW over life cycle
Chapter 6 Annual Worth Analysis
10
Chapter 6 Annual Worth Analysis
11
First Cost, $
Annual maintenance cost, $
Annual labor cost, $
Extra annual income taxes, $
Salvage value, $
Life, years
Machine A
26,000
800
11,000
2,000
6
Machine B
36,000
300
7,000
2,600
3,000
10
If the minimum required rate of return is 15% per year, help the
manager decide which machine to select.
Chapter 6 Annual Worth Analysis
12
2
3. Solution:
Example 6.4: Assume the company in previous
example is planning to exit the tomato canning
business in 4 years. At that time, the company
expects to sell machine A for $12,000 or machine B
for $15,000. All other costs are expected to remain
the same. Which machine should the company
purchase under these conditions?
Machine A:
AWA = -26,000(A/P,15%,6) + 2,000 (A/F,15%,6) - 11,800
= -26,000*(.26424) + 2,000*(.11424) – 11,800
= $-18,442
Machine B:
AWB = -36,000(A/P,15%,10) + 3,000 (A/F,15%,10) - 9,900
= -36,000*(.19925) + 3,000*(.04925) – 9,900
= $-16,925
NOTE:
This is a study period problem. So we have considered
all cash flows only for the study period (4 years).
Select machine B since AWB > AWA.
Chapter 6 Annual Worth Analysis
13
14
Chapter 6 Annual Worth Analysis
Example 6.5:
Solution:
AWA
AWB
A public utility is trying to decide between two different
sizes of pipe for a new water main. A 250-mm line will
have an initial cost of $40,000, whereas a 300-mm line
will cost $46,000. Since there is more head loss
through the 250-mm pipe, the pumping cost for the
smaller line is expected to be $2500 per year more
than for the 300-mm line. If the pipes are expected to
last for 15 years, which size should be selected if the
interest rate is 12% per year? Use an annual-worth
analysis.
= -26,000(A/P,15%,4) +12,000 (A/F,15%,4) – 11,800
= -26,000*(.35027) + 12,000*(.20027) – 11,800
= $-18,504
= -36,000(A/P,15%,4) +15,000 (A/F,15%,4) – 9,900
= -36,000*(.35027) + 15,000*(.20027) – 9,900
= $-19,506
Select machine A as AWA > AWB.
Chapter 6 Annual Worth Analysis
15
16
Chapter 6 Annual Worth Analysis
Reminder: Capitalized Cost (CC)
Solution:
Capitalized Cost (CC) for a uniform series A of
1
end-of-period cash flows:
1 − (1 + i ) n
= A
P=A(P/A, i, n)=A[(1+i)n – 1]/[i(1+i)n]
AW250 = -40,000(A/P, 12%, 15) – 2500
= -$8,373
1
1 − (1 + i ) n
lim A
n→ ∞
i
AW300 = -46,000(A/P, 12%, 15)
= -$6,754
Now, we have:
Also,
Select the 300 mm pipe
Chapter 6 Annual Worth Analysis
17
= A/i
i
CC = A/i
A = CC(i)
Chapter 6 Annual Worth Analysis
18
3
4. Annual-Worth of a Permanent Investment
Example 6.6:
If an investment has infinite life, it is called
a perpetual (permanent) investment. If P is the
present worth of the cost of that investment, then
AW is P times i.
Two alternatives are considered for covering a
football field. The first is to plant natural grass
and the second is to install AstroTurf. Interest
rate is 10%. Cost structure for each alternative
is given below.
AW= P*i
19
Chapter 6 Annual Worth Analysis
20
Chapter 6 Annual Worth Analysis
Alternative I:
Alternative II:
Natural Grass - Replanting will be required each 10
years at a cost of $10,000. Annual cost for
maintenance is $5,000. Equipment must be
purchased for $50,000 which will be replaced after 5
years with a salvage value of $5,000
5K
0
1
2
3
5K
4
6
10
10K
5K
5K
5K
5K
10K
5K
5K
50K
50K
50K
21
Chapter 6 Annual Worth Analysis
5K
Solution:
AW of alt. A
Cycle = 10 years
0
1
2
3
4
5K
5K
5K
50K
5K
5K
5K
50K
10
0
10K
50K
1
50K
5K
2
5K
3
5K
4
5K
10K
Planting: -10,000 (A|P, .10, 10) = $-1,628
5K
6
5K
5K
50K
10
10K
50K
AW of Alternative A, continued
1st Set Equipment (first 5 years):
[-50,000 + 5,000(P|F, .10, 5)] (A|P, .10, 10) = $-7,632
2nd Set of Equipment (second 5 years) :
{[-50,000 + 5,000(P|F, .10, 5)] (P|F, .10, 5)} (A|P, .10, 10)
= $-4,739
Chapter 6 Annual Worth Analysis
22
Chapter 6 Annual Worth Analysis
5K
6
10K
5K
AstroTurf - Installing AstroTurf cost $150,000 and
it is expected to last indefinitely. Annual
maintenance cost is expected to be $5,000
23
Maintenance : -5,000 annually
Total : -1,628 - 7,632 - 4,739 - 5,000 = $-18,999
Chapter 6 Annual Worth Analysis
24
4
5. Example 6.7: Compare the following proposals to
maintain a canal. Use interest rate 5%.
AW of Alternative B:
(AstroTurf - Installing AstroTurf cost $150,000 and it is
expected to last indefinitely. Annual maintenance cost is
expected to be $5,000)
Annual Cost of Installation : -150,000 (.10) = $-15,000
Maintenance: $-5,000 annually
Proposal B (Concrete Lining)
Initial cost, $
Annual maintenance cost, $
Lining repairs every 5 years, $
Life, years
Total : -15,000 - 5,000 = $-20,000
Choose A
Chapter 6 Annual Worth Analysis
Proposal A (Buying Dredging Machine)
First Cost, $
65,000
Annual maintenance cost, $
32,000
Salvage value, $
7,000
Life, years
10
25
Solution:
650,000
1,000
1,800
permanent
Chapter 6 Annual Worth Analysis
26
Example 6.16
AWA = -65,000(A/P,5%,10)+7,000(A/F,5%,10) - 32,000 = $- 39,861
AWB = -650,000(0.05) – 1,000 - 1,800(A/F,5%,5)
= $- 33,826
Choose proposal B.
Chapter 6 Annual Worth Analysis
The cash flow associated with a project
having an infinite life is $-100,000 now,
$-30,000 each year, and an additional
$-50,000 every 5 years beginning 5 years
from now. Determine its perpetual
equivalent annual worth at an interest rate
of 20% per year.
27
Chapter 6 Annual Worth Analysis
28
Example 6.17
Solution
AW = -100,000(0.20) - 30,000 - 50,000(A/F,20%,5)
= $-56,719 per year
Chapter 6 Annual Worth Analysis
29
A philanthropist working to set up a permanent
endowment wants to deposit a uniform
amount of money each year, starting now and
for 10 more (11 deposits), so that $ 10 million
per year will be available for research related
to planetary colonization. If the first $10 million
grant is to be awarded 11 years from now,
what is the size of the uniform donations, if the
fund will generate income at a rate of 15% per
year?
Chapter 6 Annual Worth Analysis
30
5
6. Solution
Example 6.18
First find P in year 10 for the $10 million annual
amounts and then use the A/F factor to find A:
The costs associated with a certain robotic
arm are $40,000 now and $24,000 per
year, with a $6000 salvage value after 3
years. Determine the perpetual equivalent
annual worth of the robot at an interest
rate of 20% per year.
P10 = -10/0.15 = -$66.667 million
A = -66.667(A/F,15%,11)= -$2,738,000 per
deposit
Chapter 6 Annual Worth Analysis
31
Chapter 6 Annual Worth Analysis
32
Solution
The perpetual uniform annual worth is the AW for
one life cycle:
AW = -40,000(A/P,20%,3) - 24,000
+ 6000(A/F,20%,3) = $-41,341
Chapter 6 Annual Worth Analysis
33
6