2.1 Dell Support has been given an expedited 6 weeks to change all computers at UNISA computer lab instead of the original 19 weeks agreed upon. The following activities are performed for this project. 2.1.1 Calculate the crash cost per month for each project activity. 2.1.2 Determine the least cost of crashing the project by three (3) weeks. (Show full calculations) 2.2 To build a prototype of a laser scanning machine at Dave Pretorius Corp, the following seven activities are undertaken. The activities are labelled from A to G and their estimated completion times in weeks and their predecessors are given. [TURN OVER] EPT2602 2.2.1 Complete the table below to determine the forward and backward passes for this project. (7)