Question

Hi would someone please help me with the following problem, this way I will understand how I can do it myself I missed class due to being ill...

Calculate the earliest starting time, the latest starting time (EST,LST) and the earliest finishing time and latest finishing time (EFT, LFT) for each activity including
an outline description of the critical path, highlighting the critical activities and the shortest possible time in days in which the project can be
completed as scoped above. (give reasons for your choice)

The activities are as follows here:

No Activity Duration(days) Predecessor
1 A 1 -
2 B 14 1
3 C 14 1
4 D 7 2
5 E 7 4
6 F 28 5
7 G 42 3,6
8 H 12 3,6
9 I 2 5
10 J 84 9
11 K 7 1
12 L 7 11
13 M 35 6,9,11
14 N 1 13
15 O 5 14
16 P 7 6
17 Q 21 16
18 R 4 12
19 S 7 9
20 T 5 7,19
21 U 1 8,10,18,20
22 V 10 15,17,21

Thanks a lot