can someone help me quick pleaseee!!

A small software development project at Krishna Dhir's firm has five major activities. The times are estimated and provided in the table below a) Find the expected compietion time for this project. The expected completion time for this project is (enter your response as a whole number). b) What variance value would be used to find probabilities of finishing by a certain time? The project variance value of completion time is (enter your response as a whole number)