The setup time in a sequential batch production operation is 2.0 hr, and the actual process- ing time is 1.60 min per cycle. Three parts are produced each cycle. No tool handling time is included in the cycle. Part handling time each cycle is 45 sec. It consists of the worker obtaining two starting work units from a parts tray, loading them into the machine, and then after processing, unloading the completed parts and placing them into the same tray. Each tray holds 24 parts. When all of the starting work units have been replaced with completed parts, the tray of completed parts is moved aside and a new tray of starting units is moved into position at the machine. This irregular work element takes 4.0 min. Batch quantity is 2,400 units. Determine (a) average cycle time, (b) time to complete the batch, and (c) aver- age production rate.