Question

The activities for a breakfast are shown in the table below. Activity Description Duration (in minute)...

The activities for a breakfast are shown in the table below.

Activity

Description

Duration (in minute)

Preceding Activity

A

Get up

15

-

B

Make tea

3

D, E

C

Fill kettle

1

A

D

Fetch milk

1

A

E

Boil water

5

C

F

Milk on cereal

1

D

G

Make toast

4

H

H

Cut bread

2

A

I

Eat

8

B, F, G

(a) Use the activity network construction algorithm to number the vertices and to draw a fully-labelled activity network. (No need to key-in here)

(b) Apply Critical path construction algorithm to the activity network to find a critical path:
     (do not include START or FINISH, Eg. ABCDEFG).

(c) Write down the minimum breakfast time (in minutes):

(d) Write down the earliest starting time and latest starting time for activity D (in minutes)

(e) Write down the earliest starting time and latest starting time for activity G (in minutes)

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