=11-29 The following costs have been estimated for the activities in a project:

Activity Immediate Predecessors Time Cost ($)

A — 8 8,000 B — 4 12,000 C A 3 6,000 D B 5 15,000 E C, D 6 9,000 F C, D 5 10,000 G F 3 6,000

(a) Develop a cost schedule based on earliest start times.

(b) Develop a cost schedule based on latest start times.

(c) Suppose that it has been determined that the

$6,000 for activity G is not evenly spread over the three weeks. Instead, the cost for the first week is

$4,000, and the cost is $1,000 per week for each of the last two weeks. Modify the cost schedule based on earliest start times to reflect this situation.