Tom Schriber, a director of personnel of Management Resources, Inc., is in the process of designing a program that its customers can use in the job-finding process. Some of the activities include preparing resumes, writing letters, making appointments, to see prospective employers, researching companies and industries, and so on. Some of the information on the activities is shown in the following table: (Excel Format)

DAYS IMMEDIATE

ACTIVITY a m b (DAYS) PROCESSORS

A 8 10 12 ---

B 6 7 9 ---

C 3 3 4 ---

D 10 20 30 A

E 6 7 8 C

F 9 10 11 B, D, E

G 6 7 10 B, D, E

H 14 15 16 F

I 10 11 13 F

J 6 7 8 G, H

K 4 7 8 I, J

L 1 2 4 G,H