C723 - FORMULAS AND SAMPLES EXAM
2025/2026 QUESTIONS AND ANSWERS
100% PASS
Test=A+(4*M)+P÷6
What Does Each Letter Stand For? - ANS A Is The Optimistic Time
MM Is The Most Likely Time
P Is The Pessimistic Time
To Determine The Latest Start, Subtract The Activity Duration From The Latest Finish. -
ANS LS = Duration - LF
To Find The Early Finish, Add The Early Start To The Duration Of Each Task. - ANS EF = ES +
Duration Of Each Task
Slack Time (SL) Is Calculated Using The Following Formula: - ANS SL=LS−ES
How Is The Latest Start Time Calculated? - ANS Subtract The Task Duration From The Latest
Finish.
To Determine The Early Finish, Add The Task Duration To The Early Start. - ANS EF = Task
Duration + ES
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
,________ = Cost Of Items + Total Holding Cost + Total Ordering Cost - ANS Inventory Cost
___________ = (Crash Cost - Normal Cost) ÷ (Normal Duration - Crash Duration) - ANS Cost
Slope
Based On Activity A As Described Below, What Would Be The Cost To Crash By 2 Days Be?
Normal Days = 12
Normal Cost = $18,000
Crash Days = 8
Crash Cost = $22,000
Maximum Time Reduction = 4 - ANS (22,000 - 18,000) ÷ (8 - 12)
4,000 ÷ 4 = 1,000
1,000 X 2 = 2,000
The Answer Is $2,000
Calculate Duration Estimates For The Following Situations:
A Construction Manager Received An Estimate From A Sub-Contracted Plumber For Completion
Of The 2.5 Bathrooms. The Plumber Thought It Could Be Done In As Few As 20 Labor Hours,
Although This Type Of Design Usually Takes 28 Hours. The Plumber Does Remember That The
Last Time, It Took Longer Than Usual And The Labor Hours Climbed To 36. Using The Beta
Distribution Method, How Many Hours Should The Construction Manager Use As An Estimate
For The Plumbing? - ANS The Formula Is:
Te = (O + 4m + P) / 6
28 Hours
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, What Would Be The Additional Cost To Crash Activity A By The Maximum Time Reduction
Period?
Normal Days = 12
Normal Cost = $18,000
Crash Days = 8
Crash Cost = $22,000
Maximum Time Reduction = 4 - ANS (22,000 - 18,000) ÷ (12 - 8)
4,000 ÷ 4 = 1,000
1,000 X 4 = 4,000
The Answer Is $4,000
Based On The Graphic Below, What Would Be The Additional Cost To Crash Activity C By The
Maximum Time Reduction Period?
Normal Days = 20
Normal Cost = $32,000
Crash Days = 12
Crash Cost = $38,000
Maximum Time Reduction = 8 - ANS (38,000 - 32,000) ÷ (20-12)
6,000 ÷ 8 = 750
750 X 8 = 6,000
The Answer Is $6,000
Probability X Value = What? - ANS The Expected Value Of The Alternative
pg. 3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
2025/2026 QUESTIONS AND ANSWERS
100% PASS
Test=A+(4*M)+P÷6
What Does Each Letter Stand For? - ANS A Is The Optimistic Time
MM Is The Most Likely Time
P Is The Pessimistic Time
To Determine The Latest Start, Subtract The Activity Duration From The Latest Finish. -
ANS LS = Duration - LF
To Find The Early Finish, Add The Early Start To The Duration Of Each Task. - ANS EF = ES +
Duration Of Each Task
Slack Time (SL) Is Calculated Using The Following Formula: - ANS SL=LS−ES
How Is The Latest Start Time Calculated? - ANS Subtract The Task Duration From The Latest
Finish.
To Determine The Early Finish, Add The Task Duration To The Early Start. - ANS EF = Task
Duration + ES
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
,________ = Cost Of Items + Total Holding Cost + Total Ordering Cost - ANS Inventory Cost
___________ = (Crash Cost - Normal Cost) ÷ (Normal Duration - Crash Duration) - ANS Cost
Slope
Based On Activity A As Described Below, What Would Be The Cost To Crash By 2 Days Be?
Normal Days = 12
Normal Cost = $18,000
Crash Days = 8
Crash Cost = $22,000
Maximum Time Reduction = 4 - ANS (22,000 - 18,000) ÷ (8 - 12)
4,000 ÷ 4 = 1,000
1,000 X 2 = 2,000
The Answer Is $2,000
Calculate Duration Estimates For The Following Situations:
A Construction Manager Received An Estimate From A Sub-Contracted Plumber For Completion
Of The 2.5 Bathrooms. The Plumber Thought It Could Be Done In As Few As 20 Labor Hours,
Although This Type Of Design Usually Takes 28 Hours. The Plumber Does Remember That The
Last Time, It Took Longer Than Usual And The Labor Hours Climbed To 36. Using The Beta
Distribution Method, How Many Hours Should The Construction Manager Use As An Estimate
For The Plumbing? - ANS The Formula Is:
Te = (O + 4m + P) / 6
28 Hours
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, What Would Be The Additional Cost To Crash Activity A By The Maximum Time Reduction
Period?
Normal Days = 12
Normal Cost = $18,000
Crash Days = 8
Crash Cost = $22,000
Maximum Time Reduction = 4 - ANS (22,000 - 18,000) ÷ (12 - 8)
4,000 ÷ 4 = 1,000
1,000 X 4 = 4,000
The Answer Is $4,000
Based On The Graphic Below, What Would Be The Additional Cost To Crash Activity C By The
Maximum Time Reduction Period?
Normal Days = 20
Normal Cost = $32,000
Crash Days = 12
Crash Cost = $38,000
Maximum Time Reduction = 8 - ANS (38,000 - 32,000) ÷ (20-12)
6,000 ÷ 8 = 750
750 X 8 = 6,000
The Answer Is $6,000
Probability X Value = What? - ANS The Expected Value Of The Alternative
pg. 3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
