please help with a, b and c thank you!

Amelio Rodriguez Computing wants to establish an assembly line for producing a new product, the Personal Digital Assistant (PDA). The tasks, task times, and immediate predecessors for the tasks are as follows: Amelio's goal is to produce 175 PDAs per hour. a) The cycle time for the production of a PDA = seconds (round your response to two decimal places). b) The theoretical minimum number of workstations that Amelio can achieve in this assembly line = (round your response up to the next whole number). c) For one to assign the tasks to the actual workstations and be able to use the "theoretical minimum" number, the activity assignment should be: Were you able to assign all the tasks to the theoretical minimum number of workstations