2. The work cycle in a worker-machine system consists of (1) external manual work elements with a total normal time of 0.42 min, (2) a machine cycle with machine time of 1.12 min, and (3) internal manual elements with a total normal time of 1.04 min. (a) Determine the standard time for the cycle, using a PFD allowance factor of 15%, and a machine allowance factor of 30%. (b) How many work units are produced daily (8-hour shift) at standard performance? Numbering