a. Based on the normal costs from the project, what is the cost to complete this project within 15 days? (4 marks) b. Calculate, for each activity, the crash cost per time period for accelerating the activity's duration from its normal time to its crash time. (6 marks) c. Determine which activities should see their duration shorten in order to get the project completed in 10 days using the minimum cost schedule approach. Give detailed explanations of the process you are following and the choice you made. (10 marks) d. What will be the total cost of the project if completed in 10 days? Detail your calculations. (4 marks)