Niles and bob sailed at the same time for the same length of time. niles' sailboat traveled 45 miles at a speed of 9 mph, while bob's motorboat traveled 70 miles at a speed of 14 mph. for how long were niles and bob traveling?

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?