Please help! And for #1 can someone help me find: How much slack does activity B have?

Here is a CPM network with activity times in weeks: a. Determine the critical path. A-E-G-C-DA-B-C-DA-E-F-D b. How many weeks will the project take to complete? The following represents a project that should be scheduled using CPM: b. What is the critical path? A-D-G-HB-E-G-HA-C-F-HA-D-F-H c. What is the expected project completion time? Note: Do not round intermediate calculations. Round your answer to 3 decimal places. The following activities are part of a project to be scheduled using CPM: a. What is the critical path? A-C-D-F-GA-B-D-F-GA-B-E-GA-C-D-E-G b. How many weeks will it take to complete the project