Assume that the activities in Problem 3.15 (see below) have the following costs to shorten: A, $300/week; B, $100/week; C, $200/week; E, $100/week; and F, $400/week. Assume also that you can crash an activity down to 0 weeks in duration and that every week you can shorten the project is worth $250 to you. What activities would you crash? What is the total crashing cost?

3.15 Activity Time (weeks) Precedes A start 1 B, C B 1 E C 4 F E 2 F F end 2 -