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Please solve the question quickly and clearly also,clear hand writing

If your MEC id number is 19518855 then substitute a = 1, b = 9,c=1,d=8 e = 8, f = 5 and g =s in the questions at the beginning and solve them. a+1 B A C B 2. Sulaiman is planning to take his car for regular service. The work required in servicing is divided into several activities and represented in the below table along with the time taken for each task: Activity IMMEDIATE ACTIVITY TASK Duration (min) symbol PREDECESSORS Open the petrol tank cap A b+5 Add petrol (Paid service) d+1 Close the petrol tank cap Open bonnet, check and add engine d+10 oil (Paid service) Check radiator coolant, Check battery, Close bonnet Clean the wind shield, Check air f+6 pressure in tires Prepare bill a+e+6 BE Collect payment a+b+5 Draw the network diagram and find the earliest start and latest finish time of all the activities. Also determine the total project time for which Sulaiman will stay at the service station and list out the critical activities. (20 Marks) D e+8 E D F G