Ratio of sandwiches with white bread and brown bread is 10: 3. of the white sandwiches 2/3 are vegetarian, of the sandwiches that are brown half are vegetarian. what fraction of the sandwiches are vegetarian?

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?