please answer the below question individual and briefly with diagrams(diagrams are must)

1.

GICISED 18. From the following information, draw the project network. Compute the early, late, and slack times for each activity. Identify the critical path. (Hint: Draw the finish-to-start relationships first.) Finish-to-Start Finish-to-Start Additional Lag ID Duration Predecessor Lag Relationships Lag 5 None None 10 A None 0 15 A Start-finish C to D 20 5 B Start-start D to E 5 DOO DOOO Finish-finish D to E 25 20 Finish-finish E to F 0 15 None 0 10 Finish-finish G to F 10 20 None19. Given the following information, draw the project network. Compute the early, late, and slack times for the project network. Which activities on the critical path have only the start or finish of the activity on the critical path? Finish-to-Start Finish-to-Start Additional Lag ID Duration Predecessor Lag Relationships Lag A None None A None Finish-finish C to F None Finish-finish E to G TOQUDD L-IOT MOOD None Start-start G to H 10 None None E Finish-finish I to J Ouo G, H None