Hi, I have a question, I am making a mock exam of the subject project management. The question on the exam is: Calculate the crash cost-per-day (all...

Hi, I have a question, I am making a mock exam of the subject project management. The question on the exam is: Calculate the crash cost-per-day (all activities may be partially crashed). Find the optimal project duration. What is the project cost? Calculate the shortest delivery time for the project. What is the cost?

I crashed all the activities on the critical path, but the total cost are still decreasing.. What is the next step?