An eight-station rotary-indexing machine performs machining operations at seven workstations, and the eighth station is used for unloading and loading parts. The longest process time is 1.55 min and the loading/unloading time is less than this. It takes 9.0 sec to index the machine between workstations. Stations break down with a frequency of 0.005, which is considered equal for all eight stations. When breakdowns occur, it takes an average of 7.0 min to diagnose the problem and make repairs. The starting work part costs $3.50 per unit. Operating cost of the indexing machine is $96/hr, and tooling cost is $0.38 per piece. Determine (a) line efficiency, (b) average hourly production rate, and (c) completed part cost.