For each of the problems listed below, determine the following values for each activity: the earliest start time, earliest finish time, latest finish time, latest start time, and activity slack time. a-1. 5 2 2 8 7 2 S 3 5 7 10 6 13 10 11 12 End Activity ES EF LS LF Slack 1 2 4 6 8 3 5 7 9 10 11 12 13 a-2. Identify the critical activities, and determine the duration of the project. The critical activities are 9, 10, 11, 12, and 13 b-1. 3 18 2 10 5 5 13 3 Activity 1 2 3 4 5 7 8 6 1 o 9 ES 11 7 6 8 2 6 EF LS LF Slack b-2. Identify the critical activities, and determine the duration of the project. The critical activities are 1, 2, 5, 7, 8, and 9 c-1. The following information pertains to a project that is about to commence. Which activities would you be concerned with in terms of timely project completion? Estimated Immediate Duration Activity Precedes(s) (days) A 15 B A 12 C B 6 D B 5 E C F 8 F H F 9 I G 7 ] H 14 K ] 6 END D, E, I, K Activity ES EF LS LF Slack A B C D E F G H I ] K c-2. Identify the critical activities, and determine the duration of the project. The critical activities are F, H, J, and K