Calculate Point of Indifference Between Two Cost Scenarios 1.
Transcript of Calculate Point of Indifference Between Two Cost Scenarios 1.
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Calculate Point of Indifference Between Two Cost Scenarios
Intermediate Cost Analysis and Management
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What would you do for a Klondike Bar?It’s essentially a Cost/Benefit Analysis!
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Terminal Learning Objective
• Action: Calculate Point of Indifference Between Two Different Cost Scenarios that Share a Common Variable
• Condition: You are training to become an ACE with access to ICAM course handouts, readings, and spreadsheet tools and awareness of Operational Environment (OE)/Contemporary Operational Environment (COE) variables and actors
• Standard: With at least 80% accuracy:• Describe the concept of indifference point or tradeoff• Express cost scenarios in equation form with a common variable• Identify and enter relevant scenario data into macro enabled
templates to calculate Points of Indifference
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What is Tradeoff?
• Life is full of Tradeoffs• What we give up could be visualized as a “cost” • What we receive could be labeled a “benefit”• The transaction occurs when the benefit
is equal to or greater than the cost• Point of equilibrium: the point where
cost is equal to benefit received. Will Work for
Food
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Tradeoff Theory
• Identifies the point of equality between two differing cost expressions with a common unknown variable
• “Revenue” and “Total Cost” are cost expressions with “Number of Units” as the common variable:
Revenue = $Price/Unit * #UnitsTotal Cost = ($VC/Unit * #Units) + Fixed Cost
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Tradeoff Theory (cont’d)
• Breakeven Point is the point where:Revenue – Total Cost = Profit
Revenue – Total Cost = 0 Revenue = Total Cost
• Setting two cost expressions with a common variable equal to one another will yield the breakeven or tradeoff point
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What is an Indifference Point?
• The point of equality between two cost expressions with a common variable
• Represents the “Decision Point” or “Indifference Point”• Level of common variable at which two alternatives
are equal• Above indifference point, one of the alternatives will
yield lower cost • Below indifference point, the other alternative will
yield lower cost
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Indifference Point Applications
• Evaluating two machines that perform the same task• i.e. Laser printer vs. inkjet• Low usage level favors the inkjet, high usage
favors the laser, but at some point they are equal• Outsourcing decisions• What level of activity would make outsourcing
attractive?• What level would favor insourcing?• At what level are they equal?
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Learning Check
• What is an indifference point or tradeoff point?
• What is an example of an application of indifference points?
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Indifference Point Applications
• Evaluating two Courses of Action:• Cell phone data plan• Plan A costs $.50 per MB used• Plan B costs $20 per month + $.05 per MB used• Plan A is the obvious choice if usage is low• Plan B is the obvious choice if usage is high• What is the Indifference Point?• The number of MB used above which Plan B costs less,
below which Plan A costs less?
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Plan A vs. Plan B
• What is the cost expression for Plan A?• $.50 * # MB
• What is the cost expression for Plan B?• $20 + $.05 *# MB
• What is the common variable?• # MB used
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Plan A vs. Plan B
• What is the cost expression for Plan A?• $.50 * # MB
• What is the cost expression for Plan B?• $20 + $.05 *# MB
• What is the common variable?• # MB used
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Plan A vs. Plan B
• What is the cost expression for Plan A?• $.50 * # MB
• What is the cost expression for Plan B?• $20 + $.05 *# MB
• What is the common variable?• # MB used
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Plan A vs. Plan B
• What is the cost expression for Plan A?• $.50 * # MB
• What is the cost expression for Plan B?• $20 + $.05 *# MB
• What is the common variable?• # MB used
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Solving for Indifference Point
• Set the cost expressions equal to each other:$.50 * # MB = $20 + $.05 *# MB$.50 * # MB - $.05 *# MB = $20
$.45 * # MB = $20# MB = $20/$.45 # MB = $20/$.45
# MB = 20/.45 # MB = 44.4
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Solving for Indifference Point
• Set the cost expressions equal to each other:$.50 * # MB = $20 + $.05 *# MB$.50 * # MB - $.05 *# MB = $20
$.45 * # MB = $20# MB = $20/$.45 # MB = $20/$.45
# MB = 20/.45 # MB = 44.4
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Solving for Indifference Point
• Set the cost expressions equal to each other:$.50 * # MB = $20 + $.05 *# MB$.50 * # MB - $.05 *# MB = $20
$.45 * # MB = $20# MB = $20/$.45 # MB = $20/$.45
# MB = 20/.45 # MB = 44.4
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Solving for Indifference Point
• Set the cost expressions equal to each other:$.50 * # MB = $20 + $.05 *# MB$.50 * # MB - $.05 *# MB = $20
$.45 * # MB = $20# MB = $20/$.45 # MB = $20/$.45
# MB = 20/.45 # MB = 44.4
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Solving for Indifference Point
• Set the cost expressions equal to each other:$.50 * # MB = $20 + $.05 *# MB$.50 * # MB - $.05 *# MB = $20
$.45 * # MB = $20# MB = $20/$.45 # MB = $20/$.45
# MB = 20/.45 # MB = 44.4
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Plan A vs. Plan B
0 20 40 600
5
10
15
20
25
30
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Plan APlan B
$
44.4X Axis = Number of MB UsedCost of both plans increases as # MB increases
Cost of Plan A is zero when usage is zero, but increases rapidly with usage
Cost of Plan B starts at $20 but increases slowly with usage
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Proof
• Plug the solution into the original equation:$.50 * # MB = $20 + $.05 * # MB
$.50 * 44.4 MB = $20 + $.05 * 44.4 MB$.50 * 44.4 MB = $20 + $.05 * 44.4 MB
$22.20 = $20 + $2.22$22.20 = $22.22 (rounding error)
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Interpreting the Results
• Decision: Will you use more or less than 44.4 MB per month?• Using less than 44.4 MB per month makes Plan A
the better deal• Using more than 44.4 MB per month makes Plan B
the better deal• What other factors might you consider when
making the decision?
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Indifference Points SpreadsheetEnter data to compare two multivariate cost scenariosi.e. Cell phone data plans
Solve for Breakeven level of Usage
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Indifference Points SpreadsheetEnter different quantities to compare the cost of both options for various levels of usage
See which option is more favorable at a given level
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Learning Check
• How would you find the indifference point between two cost options with a common variable?
• You are taking your children to the zoo. You can purchase individual tickets ($15 for one adult and $5 per child) or you can purchase the family ticket for $30. What common variable will allow you to calculate an indifference point?
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Indifference Point Example
• A six-pack of soda costs $2.52 and contains 72 ounces of soda
• A two-liter bottle of the same soda contains 67.2 ounces of soda
• What price for the two-liter bottle gives an equal value?
• The common variable is cost per ounce
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Indifference Point Example
• What is the expression for cost per ounce for the six pack?• $2.52/72 oz.
• What is the expression for cost per ounce for the two-liter bottle?• $Price/67.2 oz.
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Indifference Point Example
• What is the expression for cost per ounce for the six pack?• $2.52/72 oz.
• What is the expression for cost per ounce for the two-liter bottle?• $Price/67.2 oz.
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Indifference Point Example
• What is the expression for cost per ounce for the six pack?• $2.52/72 oz.
• What is the expression for cost per ounce for the two-liter bottle?• $Price/67.2 oz.
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Solving for Breakeven Price
• Set the two cost expressions equal to one another:Cost per oz. of two-liter = Cost per oz. of six-pack
$Price/67.2 oz. = $2.52/72 oz. $Price/67.2 oz. = $.035/oz.
$Price = $.035/oz. * 67.2 oz. $Price = $.035/oz. * 67.2 oz.
$Price = $.035 * 67.2$Price = approximately $2.35
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Solving for Breakeven Price
• Set the two cost expressions equal to one another:Cost per oz. of two-liter = Cost per oz. of six-pack
$Price/67.2 oz. = $2.52/72 oz. $Price/67.2 oz. = $.035/oz.
$Price = $.035/oz. * 67.2 oz. $Price = $.035/oz. * 67.2 oz.
$Price = $.035 * 67.2$Price = approximately $2.35
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Solving for Breakeven Price
• Set the two cost expressions equal to one another:Cost per oz. of two-liter = Cost per oz. of six-pack
$Price/67.2 oz. = $2.52/72 oz. $Price/67.2 oz. = $.035/oz.
$Price = $.035/oz. * 67.2 oz. $Price = $.035/oz. * 67.2 oz.
$Price = $.035 * 67.2$Price = approximately $2.35
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Solving for Breakeven Price
• Set the two cost expressions equal to one another:Cost per oz. of two-liter = Cost per oz. of six-pack
$Price/67.2 oz. = $2.52/72 oz. $Price/67.2 oz. = $.035/oz.
$Price = $.035/oz. * 67.2 oz. $Price = $.035 /oz. * 67.2 oz.
$Price = $.035 * 67.2$Price = approximately $2.35
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Solving for Breakeven Price
• Set the two cost expressions equal to one another:Cost per oz. of two-liter = Cost per oz. of six-pack
$Price/67.2 oz. = $2.52/72 oz. $Price/67.2 oz. = $.035/oz.
$Price = $.035/oz. * 67.2 oz. $Price = $.035 /oz. * 67.2 oz.
$Price = $.035 * 67.2$Price = approximately $2.35
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Six-Pack vs. Two-Liter
$0 $1 $2 $3 $4
$(0.01)
$0.00
$0.01
$0.02
$0.03
$0.04
$0.05
$0.06
6-pack $2.522-Liter (67.2 oz.)
X Axis = Unknown Price of 2-LiterAs Price of 2-liter increases, cost per oz. increases
Cost
Per
Oun
ce
$2.35
Cost of 6-pack is known so Cost per oz. is constant
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Interpreting the Results
• If the price of the two-liter is less than $2.35, it is a better deal than the six-pack
• What other factors might you consider when making your decision?
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Indifference Points SpreadsheetEnter Data for two different cost per unit options,i.e. cost per ounce of soda
Enter cost of six-pack and number of ounces
Enter number ounces in a 2-literSolve for breakeven price
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Learning Check
• When solving for an indifference point, what two questions should you ask yourself first?
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Tradeoffs Under Uncertainty
• Review: Expected Value = Probability of Outcome1 * Dollar Value of Outcome1
+Probability of Outcome2 * Dollar Value of Outcome2
+Probability of Outcome3 * Dollar Value of Outcome3
etc.
• Assumes probabilities and dollar value of outcomes are known or can be estimated
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What if Probability is Unknown?
• Solve for Breakeven Probability• Look for what IS known and what
relationships exist• Compare two alternatives:• One has a known expected value• Example: Only one outcome with a known dollar
value and probability of 100%• The other has two possible outcomes with
unknown probability
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Solving for Breakeven Probability
• Subscribe to automatic online hard drive backup service for $100 per year
-OR-• Do not subscribe to the backup service• Pay $0 if your hard drive does not fail• Pay $1000 to recover your hard drive if it
does fail.
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Solving for Breakeven Probability
• What is the cost expression for the expected value of the backup service?
• What is the outcome or dollar value? $100
• What is the probability of that outcome? 100%
• So, the cost expression is: $100*100%
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Solving for Breakeven Probability
• What is the cost expression for the online backup service?
• What is the outcome or dollar value?$100
• What is the probability of that outcome? 100%
• So, the cost expression is:$100*100%
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Solving for Breakeven Probability
• What is the cost expression for not subscribing to the online backup service?
• What are the outcomes and dollar values?• Hard drive failure = $1000• No hard drive failure = $0
• How would you express the unknown probability of each outcome?• Probability% of hard drive failure = P• Probability% of no hard drive failure = 100% - P
• So, the cost expression is:$1000*P + $0*(100% - P)
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Solving for Breakeven Probability
• What is the cost expression for not subscribing to the online backup service?
• What are the outcomes and dollar values?• Hard drive failure = $1000• No hard drive failure = $0
• How would you express the unknown probability of each outcome?• Probability% of hard drive failure = P• Probability% of no hard drive failure = 100% - P
• So, the cost expression is:$1000*P + $0*(100% - P)
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Solving for Breakeven Probability
• Set the two expressions equal to one another:EV of not subscribing = EV of subscribing$1000*P + $0*(100% - P) = $100*100%$1000*P + $0*(100% - P) = $100*100%
$1000*P = -$100*100%$1000*P = -$100P = $100/$1000P = $100/$1000
P = .1 or 10%
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Graphic Solution
0% 5% 10% 15%$0
$20
$40
$60
$80
$100
$120
$140
$160
EV of SubscriptionEV of no subscription
X Axis = Probability of hard drive failureAs probability increases, expected value (cost) increases
Cost of subscription is known so Expected Value is constant
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Interpreting the Results
• If the probability of hard drive failure is greater than 10%, then the backup service is a good deal
• If the probability of hard drive failure is less than 10%, then the backup service may be overpriced
• What other factors might you consider in this case?
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Indifference Points SpreadsheetSolve for breakeven Probability
Define the two options you are comparing
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Indifference Points SpreadsheetEnter known data for both optionsSolve for unknown probability
See how expected value changes as probability changes
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What If?
• What if the cost of recovering the hard drive is $2000? What is the breakeven probability?
• What if the cost of the backup service is $50? $500?
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Learning Check
• What is the equation for expected value? • Which value is represented by a horizontal line
on the graph of breakeven probability?
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Multi-period Tradeoffs
• Identify indifference points for proposed projects or investments• Above which the project is favorable• Below which the project is unfavorable
• Identify sensitive variables• Those where a small change has a significant
impact on the decision
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Review: Three Essential Components of Present Value Calculation
• Discount Rate:• Similar to an Interest Rate or Inflation Rate• Stated as an annual rate
• Cash Flow:• May be an Inflow, an Outflow or a Combination• Multiple Equal Cash Flows over equal time periods
are an Annuity• Number of Discount Periods• Stated in years
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Review: Net Present Value Equations
• Net Present Value = (PV of Cash Flow0) + (PV of Cash Flow1) + (PV of
Cash Flow2) …
• PV of Cash Flown =
Cash Flown * % Factor
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Indifference Point
• The Indifference Point or breakeven is the point at which the NPV equals zero
• Given all the components of the equation but one we can:• Set the equation equal to zero• Solve for the unknown variable to identify the
Indifference Point in terms of that variable
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Indifference Point
• Remember:• Proposed future cash flows or benefits are based
on assumptions• Discount rates are based on assumptions• Useful life of project is based on assumption• Assumptions should be tested for validity through
what-if scenarios or breakeven analysis
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Net Present Value Example
• You are considering the following proposed project:• Requires $100,000 initial investment now• Is expected to yield $100,000 per year for the next
two years• Assume a 12% discount rate
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Review: Steps in Calculating Net Present Value
• Identify the key variables• Cash flows: Initial Investment (-$100k) and Annual
Cash Inflows (+$100K each)• Discount Rate (12%)• Time Periods (2 years)
• Build a timeline• Identify the appropriate PV Factor(s) and
multiply to calculate PV of each cash flow• Sum all discounted cash flows
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Build a Timeline
Year 0 Year 1 Year 2-100
-80-60-40-20
020406080
100
Annual Cash Flows
The timeline of the cash flows looks like this:
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Identify the PV Factors and Multiply
Year 0 Year 1 Year 2-100
-80-60-40-20
020406080
100
Annual Cash Flows
NPV = $100,000 * .893 + $100,000 * .797 = $169,000Or Using the Annuity Table
NPV = $100,000 * 1.690 = $169,000
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Sum the Discounted Cash Flows
Year 0 Year 1 Year 2-100
-80-60-40-20
020406080
100
Annual Cash Flows
NPV = - $100,000 + $169,000 = $69,000
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Breakeven Net Present Value
• Net Present Value Formula= – Initial Investment + PVA factor * Annual Cash Flow• Breakeven is the point where:
– Initial Investment + PVA factor *Cash Flow = 0-or-
PVA factor *Cash Flow = Initial Investment
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Setting Up the Analysis
• Cost Expression for this Project is:NPV = -$100,000 + ($100,000 * 1.690) = $69,000
• Set Cost Expression Equal to Zero, Solve for Annual Cash Flow:
NPV = -$100,000 + (Cash Flow* 1.690) = 0Cash Flow * 1.690 = $100,000Cash Flow = $100,000/1.690
Cash Flow = $59,171• Interpret: Any Annual Cash Flow Greater than
$59,171 will Yield a Positive NPV
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Setting Up the Analysis
• Cost Expression for this Project is:NPV = -$100,000 + ($100,000 * 1.690) = $69,000
• Set Cost Expression Equal to Zero, Solve for Annual Cash Flow:
NPV = -$100,000 + (Cash Flow* 1.690) = 0Cash Flow * 1.690 = $100,000Cash Flow = $100,000/1.690
Cash Flow = $59,171• Interpret: Any Annual Cash Flow Greater than
$59,171 will Yield a Positive NPV
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Solving the Equation
• Cost Expression for this Project is:NPV = -$100,000 + ($100,000 * 1.690) = $69,000
• Set Cost Expression Equal to Zero, Solve for Annual Cash Flow:
NPV = -$100,000 + (Cash Flow* 1.690) = 0Cash Flow * 1.690 = $100,000Cash Flow = $100,000/1.690
Cash Flow = $59,171• Interpret: Any Annual Cash Flow Greater than
$59,171 will Yield a Positive NPV
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Solving the Equation
• Cost Expression for this Project is:NPV = -$100,000 + ($100,000 * 1.690) = $69,000
• Set Cost Expression Equal to Zero, Solve for Annual Cash Flow:
NPV = -$100,000 + (Cash Flow* 1.690) = 0Cash Flow * 1.690 = $100,000Cash Flow = $100,000/1.690
Cash Flow = $59,171• Interpret: Any Annual Cash Flow Greater than
$59,171 will Yield a Positive NPV
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Solving the Equation
• Cost Expression for this Project is:NPV = -$100,000 + ($100,000 * 1.690) = $69,000
• Set Cost Expression Equal to Zero, Solve for Annual Cash Flow:
NPV = -$100,000 + (Cash Flow* 1.690) = 0Cash Flow * 1.690 = $100,000Cash Flow = $100,000/1.690
Cash Flow = $59,171• Interpret: Any Annual Cash Flow Greater than
$59,171 will Yield a Positive NPV
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Solving the Equation
• Cost Expression for this Project is:NPV = -$100,000 + ($100,000 * 1.690) = $69,000• Set Cost Expression Equal to Zero, Solve for
Annual Cash Flow:NPV = -$100,000 + (Cash Flow* 1.690) = 0
Cash Flow * 1.690 = $100,000Cash Flow = $100,000/1.690
Cash Flow = $59,171
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Interpreting the Results
• Any Annual Cash Flow Greater than $59,171 will Yield a Positive NPV, making the project acceptable
• Would you consider the $100,000 annual cash flow to be a sensitive variable?
• Why or why not?
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Tradeoff Questions – Initial Investment
• What Initial Investment would yield NPV of zero?• Answer is fairly intuitive:
- Initial Investment + PVA * $100,000 = 0Initial Investment = PVA * $100,000
Initial Investment = 1.690 * $100,000Initial Investment = $169,000
• Useful in negotiating a price:• What is the most we should pay for the project given these
assumptions?
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Learning Check
• What is the basic equation for net present value of an annuity?
• Why might it be useful to know the breakeven cash flow?
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Practical Exercises