Problem 2: Ch 9 Project Management (50 Points) Following table gives the details about all tasks needed to be completed for a project along with their respective predecessors and task times (weeks). 1. ActivityActivity predecessor Time (Weeks) 7 Draw the network diagram Calculate ES-EF-LF-LS times and determine the slack for each activity. Show all calculations on the diagram Establish project critical path and find the expected project duration in weeks. a. b. c. Problem 3: Ch. 13 Inventory Management (50 Points) XYZ corp is in the business of selling mobile phones. It costs the firm $700 each time it places an order with its suppliers. Carrying cost is $150 per mobile phone per year. The store manager 2. that total annual demand for the mobile phones will be 2000 units. There are 365 days in a year. Lead time from time of order placement until receipt is 10 days. D following: a. Economic ordering quantity b. Total annual inventory cost C. Number of orders per year d. Length of order cycle (in days) e. Reorder point