a) Based on the given information regarding the activities for the project, the project length = b) The total cost required for completing this project on normal time =s c) For reducing the duration of the project by one week, the activity that should be crashed first is activity The cost of the project based on the first activily selocted for crashing wit increase by $ d) The maximum weeks by which the project can be reduced by crashing = weeks. Total cost of erashind the orolect to minimum for maximum weeks bossible) is 57