Please help with question 10,11,12&13

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 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 - ADEGH - BDEFH- BDEGH- 10. What is the resulting critical path (or paths) and also the new project duration? 11. How much money did you save (net savings) by crashing this activity? Net Savings = 1 Week Penalty Saved - 1 Week Crash Cost CRASH THIRD ITEM Crash the project by 1 week by altering the activity that will save us the most money. This will get us to the desired completion date that will eliminate the penalties. 12. Which activity will you crash third? Make the necessary change to your network diagram. ACEFH- ADEFH - ACEGH - ADEGH - BDEFH- BDEGH - 13. What is the resulting critical path (or paths) and also the new project duration