Problem 1 Consider the following project to build a house. Draw the network for the project using the AOA method. What is the earliest time you can start to "build house"? When do you have to receive the materials you ordered in order not to delay the project? (7+3+3=13 marks ) Problem 2 The time to complete the following project is 16 weeks. What is the maximum time that the project can be crashed? How much would cost increase by? (12 marks)