A manual assembly line is being designed for a product with annual demand = 100,000 units. The line will operate 50 wk/yr, 5 shifts/wk, and 7.5 hr/ shift. Work units will be attached to a continuously moving conveyor. Work content time = 42.0 min. Assume line efficiency = 0.97, balancing efficiency = 0.92, and repositioning time = 6 sec. Determine
(a) hourly production rate to meet demand,
(b) number of workers required, and (c) the number of workstations required if the estimated manning level is 1.4.