A new order filling system needs to be installed as soon as possible. The table on the next page lists that projects activities and their predecessors. Also provided is the cost information to reduce the standard activity times. (problem 7-32 in the textbook)

(a) Construct a project network for this problem. Determine the EST, EFT, LST, LFT, and slack for each activity. Also determine the critical path and project completion time.

ACTIVITY CRASH COST IMMEDIATE PREDECESSORS STANDARD TIME (Days) 7 10 8 CRASH TIME (Days) 5 8 A B D A STANDARD COST $2,000 $3,000 $3,400 $1,600 $1,900 $1,200 $8,200 $2,600 7 4 6 $3,500 $4,700 $3,700 $2,600 $4,000 $2,800 $10,900 $3,800 E F 7 5 4 3 DE B,C F,G G 11 00 m H 4