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Cost Slope Formula

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The Cost Slope is defined as the increase in the cost of the activity per unit decrease in the time. Check FAQs

CS = \frac{CC - NC}{NT - CT}

CS - Cost Slope?CC - Crash Cost?NC - Normal Cost?NT - Normal Time?CT - Crash Time?

Cost Slope Example

With values

With units

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Here is how the Cost Slope equation looks like with Values.

Here is how the Cost Slope equation looks like with Units.

Here is how the Cost Slope equation looks like.

100 = \frac{400 - 300}{7 - 6}

100 = \frac{400 - 300}{7d - 6d}

100 = \frac{400 - 300}{7 - 6}

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Cost Slope Solution

Follow our step by step solution on how to calculate Cost Slope?

FIRST Step Consider the formula

CS = \frac{CC - NC}{NT - CT}

Next Step Substitute values of Variables

∴

CS = \frac{400 - 300}{7d - 6d}

Next Step Prepare to Evaluate

∴

CS = \frac{400 - 300}{7 - 6}

LAST Step Evaluate

∴

CS = 100

Cost Slope Formula Elements

Variables

Cost Slope

The Cost Slope is defined as the increase in the cost of the activity per unit decrease in the time.

Symbol: CS

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Cost Slope

Crash Cost

Crash Cost is the cost associated when the project is completed with the crash time of the project.

Symbol: CC

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Crash Cost

Normal Cost

Normal Cost is the cost associated when the project is completed within the normal time.

Symbol: NC

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Normal Cost

Normal Time

Normal Time is the amount of time initially planned to complete the activity.

Symbol: NT

Measurement: TimeUnit: d

Note: Value should be greater than 0.

Formulas to find Normal Time

Crash Time

Crash Time is the amount of time that activity will take if the additional resources are expended.

Symbol: CT

Measurement: TimeUnit: d

Note: Value should be greater than 0.

Formulas to find Crash Time

Other formulas in Time Cost Relation category

Go Crash Cost given Cost Slope

CC = (CS \cdot (NT - CT)) + NC

Go Normal Cost given Slope

NC = CC - (CS \cdot (NT - CT))

Go Crash Time given Slope

CT = - ((\frac{CC - NC}{CS}) - NT)

Go Normal Time given Slope

NT = (\frac{CC - NC}{CS}) + CT

How to Evaluate Cost Slope?

Cost Slope evaluator uses Cost Slope = (Crash Cost-Normal Cost)/(Normal Time-Crash Time) to evaluate the Cost Slope, The Cost Slope formula is defined as the ratio of an increase in cost to a decrease in time. It is useful for project analysis. Cost Slope is denoted by CS symbol.

How to evaluate Cost Slope using this online evaluator? To use this online evaluator for Cost Slope, enter Crash Cost (CC), Normal Cost (NC), Normal Time (NT) & Crash Time (CT) and hit the calculate button.

FAQs on Cost Slope

What is the formula to find Cost Slope?

The formula of Cost Slope is expressed as Cost Slope = (Crash Cost-Normal Cost)/(Normal Time-Crash Time). Here is an example- 100 = (400-300)/(604800-518400).

How to calculate Cost Slope?

With Crash Cost (CC), Normal Cost (NC), Normal Time (NT) & Crash Time (CT) we can find Cost Slope using the formula - Cost Slope = (Crash Cost-Normal Cost)/(Normal Time-Crash Time).

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Cost Slope Formula

Cost Slope Example

Cost Slope Solution

Cost Slope Formula Elements

Other formulas in Time Cost Relation category

How to Evaluate Cost Slope?

FAQs on Cost Slope

Variable Name