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Answer these questions for the following simple set of project tasks. Task times are shown in hours w a. What is the expected

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Answer #1

Ans a.=14 hours

Ans b=3 hour

Ans c= 2 hour

Activity Time Pred 1 Pred 2
A 1
B 3
C 3 A B
D 5 C
E 8 C
Results
Activity Early Start Early Finish Late Start Late Finish Slack
A 0 1 2 3 2
B 0 3 0 3 0
C 3 6 3 6 0
D 6 11 9 14 3
E 6 14 6 14 0
Project 14
Early start computations
A 0 0
B 0 0
C 1 3
D 6 0
E 6 0
Late finish computations
A B C D E
A 14 14 14 14 14
B 14 14 14 14 14
C 3 3 14 14 14
D 14 14 9 14 14
E 14 14 6 14 14
3 3 6 14 14

Formulas

Data Immediate Predecessors
Activity Time Pred 1 Pred 2
A 1 =IF(A6<>TRIM(A6),"WARNING: There are blank characters in the activity name","")
B 3 =IF(A7<>TRIM(A7),"WARNING: There are blank characters in the activity name","")
C 3 A B =IF(A8<>TRIM(A8),"WARNING: There are blank characters in the activity name","")
D 5 C =IF(A9<>TRIM(A9),"WARNING: There are blank characters in the activity name","")
E 8 C =IF(A10<>TRIM(A10),"WARNING: There are blank characters in the activity name","")
Results
Activity Early Start Early Finish Late Start Late Finish Slack
=A6 =MAX(C22:D22) =B6+B14 =E14-B6 =B35 =D14-B14
=A7 =MAX(C23:D23) =B7+B15 =E15-B7 =C35 =D15-B15
=A8 =MAX(C24:D24) =B8+B16 =E16-B8 =D35 =D16-B16
=A9 =MAX(C25:D25) =B9+B17 =E17-B9 =E35 =D17-B17
=A10 =MAX(C26:D26) =B10+B18 =E18-B10 =F35 =D18-B18
Project =MAX(C14:C18)
Early start computations
=A6 =IF(ISNUMBER(VLOOKUP(TRIM(C6),$A$14:$C$18,3,FALSE)),VLOOKUP(TRIM(C6),$A$14:$C$18,3,FALSE),0) =IF(ISNUMBER(VLOOKUP(TRIM(D6),$A$14:$C$18,3,FALSE)),VLOOKUP(TRIM(D6),$A$14:$C$18,3,FALSE),0)
=A7 =IF(ISNUMBER(VLOOKUP(TRIM(C7),$A$14:$C$18,3,FALSE)),VLOOKUP(TRIM(C7),$A$14:$C$18,3,FALSE),0) =IF(ISNUMBER(VLOOKUP(TRIM(D7),$A$14:$C$18,3,FALSE)),VLOOKUP(TRIM(D7),$A$14:$C$18,3,FALSE),0)
=A8 =IF(ISNUMBER(VLOOKUP(TRIM(C8),$A$14:$C$18,3,FALSE)),VLOOKUP(TRIM(C8),$A$14:$C$18,3,FALSE),0) =IF(ISNUMBER(VLOOKUP(TRIM(D8),$A$14:$C$18,3,FALSE)),VLOOKUP(TRIM(D8),$A$14:$C$18,3,FALSE),0)
=A9 =IF(ISNUMBER(VLOOKUP(TRIM(C9),$A$14:$C$18,3,FALSE)),VLOOKUP(TRIM(C9),$A$14:$C$18,3,FALSE),0) =IF(ISNUMBER(VLOOKUP(TRIM(D9),$A$14:$C$18,3,FALSE)),VLOOKUP(TRIM(D9),$A$14:$C$18,3,FALSE),0)
=A10 =IF(ISNUMBER(VLOOKUP(TRIM(C10),$A$14:$C$18,3,FALSE)),VLOOKUP(TRIM(C10),$A$14:$C$18,3,FALSE),0) =IF(ISNUMBER(VLOOKUP(TRIM(D10),$A$14:$C$18,3,FALSE)),VLOOKUP(TRIM(D10),$A$14:$C$18,3,FALSE),0)
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