Question: B E F G E I 1. (20 pts.) You and several friends are about to prepare a lasagna dinner. The tasks to be performed

B E F G E I 1. (20 pts.) You and several friends are about to prepare a lasagna dinner. The tasks to be performed their immediate predecessors, and their estimated durations are as follows: TASK TASK DESCRIPTION TASKS THAT MUST PRECEDE TIME Grocery shopping 30 minutes Slice the mozzarella A 5 minutes C Beat 2 eggs 2 minutes D Mix eggs and ricotta cheese 3 minutes Cut up onions and mushrooms 7 minutes Cook the tomato sauce 25 minutes Boil large quantity of water 15 minutes H Boil the lasagna noodles G 10 minutes Drain the lasagna noodles H 2 minutes J Assemble all the ingredients I,F,D,B 10 minutes Preheat the oven 15 minutes Bake the lasagna J.K 30 minutes a) Construct the project network (AON) for preparing this dinner. b) Find the earliest start time and earliest finish time for each activity. c) Find the latest start time and latest finish time for each activity. d) Find the slack for each activity. Which of the paths is a critical path? e) Because of a phone call, you were interrupted for 6 minutes when you should have been cutting the onions and mushrooms. By how much will the dinner be delayed? If you use your food processor, which reduces the cutting time from 7 to 2 minutes, will the dinner still be delayed? K L

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