Please help with Q3. will upvote if helpful

Question 3 Use the table to answer the questions relating to the project. Activity Preceding Activity Normal Time [days] Accelerated Time [days) Cost Slope [R] 6 3 5 10 5000 5000 2000 AB AB AC BF CE CD DE DF EF FG AC CD CD CE; DE BF; DF; EF 6 4 10 8 2 Dummy activity 3 2 7 I 6 L 1 8000 5500 1000 6000 9500 3.1 3.2 (2) Draw the activity on arc diagram. Name the critical path and give its duration. Determine the minimum duration of the project, the acceleration schedule that will give a minimum additional cost to do so, and calculate the minimum additional cost. (25) HANNESUT 3.4 If the fixed cost per day is R9750 and is not committed, calculate the duration and the minimum project cost if the sum of the normal cost of all the activities are R 400 000. (7)