Problem $4-9($Algo$)$

The R&D department is planning to bid on a large project for the development of a new communication system for commercial planes. The accompanying table shows the activities, times, and sequences required.

$\backslash$table$[[$ACTIVITY IMMIEDIATE PREDECESSOR,TIME $($WEEKS$),],[$A$,-,6],[$B$,$A$,3],[$C$,$A$,4],[$D$,$B$,4],[$E$,$C$,$ D$,3],[$F$,$D$,$ F$,3],[$G$,$D$,2],[$H$,$E$,$ G$,$ H$,3],[$I$,,5]]$

b$.$ What is the critical path?

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A$-$C$-$F$-$G$-1$

A$-$B$-$E$-1$

A$-$D$-$H$-1$

A$-$D$-$F$-$G$-1$

c$.$ Suppose you want to shorten the completion time as much as possible, and you have the option of shortening any or all of B$,$ C$,$ D$,$ and $G$ each one week. Which would you shorten?

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B

c

D

G

d$-1.$ What is the new critical path?

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A$-$C$-$F$-$G$-$I

$A-B-E-1,$

A$-$D$-$H$-$H

A$.$D$-$F$-$G$-$I

d$-2.$ What is the earliest completion time for the new critical path?

Completion time

weeks

This is a numeric cell, so please

enter numbers only: