Engineering department at PT. Patah Hati is planning to develop big project for the a new fabrication plant in London. Table 2 shows the activities, times, and sequences required.

Table 2. The activities, times, and sequences required Activity Immediate Predecessor Time (weeks) 3 B A 2 A 4 D A 4 E B 6 F C, D 6 G 2 H D 3 1 E, G, H 3 DF Questions: 1. Draw the network diagram. (10 points) 2. Determine the critical path. (5 points) 3. Suppose you want to shorten the completion time as much as possible, and you have the option of shortening any or all of B, C, D, and Geach one week. Which would you shorten? (5 points) 4. Determine the new critical path and earliest completion time. (5 points)