Question

Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Fletcher would like to determine ES, EF, LS, LF, and slack for each activity. The total project completion time and the critical path should also be determined. Here are the activity times: Time Activity (weeks) А 7 Immediate Predecessor(s) Time Activity (weeks) E 3 F 7 G 11 H 8 Immediate Predecessor(s) B B CE D. B с D 2 3 A A Dave's earliest start (ES) and earliest finish (EF) are: ES EF Activity A 7 Enter your answer in the answer box and then click Check Answer. 25 remaining parts Clear All Check Answer

Answer 1

using given data, the activity on node (Aon) diagram becomes 2 Start 8 End 3 E 8 SE

First taking forward How, the Es& Ef times are computed below. Then taking backwoord How, the LS&LF times are computed below. Slack = 2S-ES is computed below. Now, Activity ES Slack А EF is LF 7 3 10 3 B 8 8 0 o o 9 7. С. 3 12 10 7 h D 10 12 15 8 E 11 9 12 8 15 00 15 23 11 22 12 G 23 15 H s 23