URGENT HELP NEEDED - Practice Question

The following Table 1 contains a list of activities, with precedence requirements and crash costs for a project that is to be completed by Future Technologies Limited (FTL). Table 1 below: Normal Cost ($) Crash Cost ($) Activity Predecessor Normal Time Activity (days) Crash Time (days) or Activities A 5 4 2000 2200 B 7 6 1500 2000 5 4 2200 2400 D A 10 8 2500 2800 E B 6 5 1950 2350 F 7 5 800 1450 AC B G 4 3 3650 4150 1550 H E, D, G 6 5 1200 a) What is the critical path for this project in Table 1, using the normal time? (you are required to show your CPM - Arrow on Node Diagram) b) What is the minimum completion time for this project on Table 1, after crashing? And what is the minimum crashing cost to finish the project in Table 1, in 18 days