A project has an important future activity X. The project manager estimates its optimistic finish time is 30 days, the most likely finish time is 40 days, and the pessimistic finish time is 50 days.

Question 1: What is the expected finish time of activity X?

A. 30

B. 40

C. 50

D. 60

E. 65

Question 2: What is the variance of activity X?

A. 0.56

B. 1.39

C. 2.22

D. 2.27

E. 11.11

F. 69.44

G. 177.78

H. 277.78