Given the project within the table below, calculate the following:

Activity Predecessor Time $($days$)$

A $--7\mathrm{.}5$

B $--9\mathrm{.}7$

C $--10\mathrm{.}5$

D A$,$ C $8\mathrm{.}8$

E D $10$

F B$,$ E $4\mathrm{.}2$

G F $9\mathrm{.}7$

H G $11\mathrm{.}5$

a$.$ What is the project length?

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b$.$ What activities are on the critical path?

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c$.$ How much slack is in activity A$?$

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$,$ and activity B$?$

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d$.$ What is the Late Start $/$ Late Finish for activity B$?$

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e$.$ What would happen to the overall project length if activity E was delayed by $4$ days, now taking a total of $14$ days?