## Question

###### Answer these questions for the following simple set of project tasks. Task times are shown in...

Answer these questions for the following simple set of project tasks. Task times are shown in hours w a. What is the expected time that all five tasks will be completed? Expected time 20 hours b. What is the earliest start for task C? Earliest startſ 4th/nd hour c. What is the latest start for task A? Latest start 1 nd/st hour

## Answers

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 ResultsActivity Early Start Early Finish Late Start Late Finish Slack A 0 1 2 3 2 B 0 3 0 3 0C 3 6 3 6 0D 6 11 9 14 3 E 6 14 6 14 0Project14Early start computationsA 0 0 B 0 0 C 1 3 D 6 0 E 6 0 Late finish computationsA 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

DataImmediate 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","")ResultsActivity 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-B18Project=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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