16.4 A 12-station automated production line has an ideal cycle time of 24 sec. Line stops occur on average once every 20 cycles. When a line stop occurs, average downtime is 3.0 min. Cost of each starting work part is $1.55, and the cost to operate the line is $66/hr. Tooling cost is $0.13 per work part. Determine (a) average hourly production rate, (b) line efficiency, and (c) cost of a workpiece produced.