In a pert activity, optimistic time is 5 hr, pessimistic time is 20 hr and the most likely time is 10 hr then what is the expected time for completion of the activity (in hours)?

In a pert activity, optimistic time is 5 hr, pessimistic time is 20 hr

1.	In a pert activity, optimistic time is 5 hr, pessimistic time is 20 hr and the most likely time is 10 hr then what is the expected time for completion of the activity (in hours)?
A.	11.13
B.	10.833
C.	9
D.	10
Answer» C. 9