Draw a network diagram for this project (Remember arrows and also START and FINISH).

Activity	Precedents
A
B	A
C	B
D	B
E	B
F	D,E

Question A5 (5 marks] A manager produces a Gantt chart for a project as shown in Figure 3 FIGURE 3 Activity A days 8 9 10 11 12 13 14 15 16 21 4 5 6 7 1) State the Earliest Finish Time for Activity C 2) State the Latest Finish Time for Activity B B 3) State the float for Activity E c 1000 4) Find the Latest Start Time for Activity E D 5) State the duration of the critical path. E F Question A6 (1 mark] An Activity H can be done in 16 days at a total cost of 3200. If necessary it could be done in 12 days at a total cost of 5100. Calculate the crash cost per day. 0 15 15 4 19 Question A7 [3 marks] A small project is made up of three activities, A, B and C. The diagram in Figure 4 shows the network for this project. 15 FIGURE 4 B 0 15 15 19 Start Finish 0 8 8 The Project Manager wants to reduce the duration of the project using crashing. The table below gives the costs and durations for each activity. 11 19 Normal Activity Duration (days) Normal Cost () after Crash days Crash cost Cost () crashing available per day Duration after crashing (days) 12 3 6 3060 B 15 4 4500 1425 1200 8 2500 3100 1) What is the crash cost per day for Activity A? 2) Find the total cost when the duration of the project is reduced by one day. 3) Find the total cost when the duration of the project is reduced by three days