Please help with question 6,7,&8

PROJECT MANAGEMENT - Critical Paths and Crashing You are a contractor that has been asked to build an apartment complex. The associated AON Network diagram and the Time/Cost table are provided below. (Based on the table, you could crash activity B for one week only at a cost of $250 or two weeks for $500.) The owner wants the apartment complex built in 29 weeks. The owner will charge a penalty cost of $1500 per week if the complex is not completed on time. A-8 C-5 F-4 E-8 H-4 B-5 D-6 G-6 Activity Normal Time Minimum Time A 8 7 B 5 3 5 3 Crash Cost per Week 200 250 1750 500 1500 1200 1000 2000 D 6 5 E 8 5 F 4 3 G 6 5 H 4 2 CRASH FIRST ITEM Crash the project by 1 week by altering the activity that will save us the most money. 6. Which activity will you crash first? Make the necessary change to your network diagram. ACEFH- ADEFH - ACEGH - ADEGH - BDEFH- BDEGH - 7 What is the resulting critical path (or paths) and also the new project duration? 8. How much money did you save (net savings) by crashing this activity? Net Savings = 1 Week Penalty Saved - 1 Week Crash Cost CRASH SECOND ITEM Again, crash the project by 1 week by altering the activity that will save us the most money. 19 Which activity will you crash second? Make the necessary change to your network diagram. ACEFH- ADEFH- ACEGH - DOPOUL