The R&D Project: There is an R&D project at a high-tech company to be managed by Joanna. She is now under pressure from the companys rivals to complete the project early with minimum cost. She has gathered the following information for project crashing. You will need to use such information to construct an AoA network. Activity (i, j)or i->j Activity Time (days) Activity Cost ($1000s) Total Allowable Crash time Marginal Crash Cost ($1000s) Normal Crash Normal Crash A (1,2) 6 4 200 240 2 20 B (2,3) 8 5 500 605 3 35 C (2,4) 2 1 570 650 1 80 D (3,5) 4 1 840 960 3 40 E (4,5) 7 6 355 400 1 45 F (5,6) 3 1 400 420 2 10 G (5,7) 5 2 710 800 3 30 Dummy 1 (3,4) Dummy 2 (6,7)

Q 6 Question 6 Under Normal time, the earliest finish (EF) time of activity D is: Select one:

a. 8 b. 14 c. 18 d. 16

Q 7 Question 7 The project duration under Normal time is: Select one:

a. 24 days b. 26 days c. 23 days d. 28 days

Q 8 Question 8 Under Normal time, the latest start (LS) time of activity F is: Select one:

a. 25 b. 24 c. 26 d. 23

Q 9 Question 9 How to crash the project by 1 day? Select one:

a. Crash activities F and G by 1 day each (at cost 40,000) b. Crash activity A by 1 day (at cost $20,000) c. Crash activity G by 1 day (at cost $30,000) d. Crash activity F by 1 day (at cost $10,000)

Q 10 Question 10 The first step of manual crashing the project by 5 days is: Select one:

a. Crash activity A by 2 days b. Crash activity F by 2 days c. Crash activity B by 3 days d. Crash activity G by 2 days