Modern inc, manufactures low-cost tables at a processing cost of $80 per table. the company produces 100 units per day and averages 90% good quality resulting in 10% defective items. Fifty percent of the defective units are reworked prior to shipment to Moderns distribution center. The rework cost is $10 per unit. If the production cost is decreased to $70 the quality productivity ratio (QPR) is