4. A process includes 9 tasks and there are 3 workers. Each task can be assigned to only one worker and each worker must be assigned consecutive tasks. The time to complete tasks 1 to 9 (in seconds) are as follows: 40, 90, 35, 35, 50, 5, 10, 80, 60 What is the capacity of this process in units per hour?

5. Pipes are installed in a process with two resources. The first resource has a capacity of 0.62 pipes per hour. The capacity of the second resource is 0.38 pipes per hour. The first resource has 8 workers, and the second resource has 8 workers. One additional worker is hired who is as productive as the current workers. What is the new capacity of this process?