The cоmpаny implemented а prоcess imprоvement thаt reduced processing time for each unit. Although output increased by 30 percent, an additional worker is required, and less material is used. Under the old process, five workers could produce 60 units per hour. Labor costs were $20 per hour for both processes, and material costs were $30 per unit. For the new process, the material cost is $20 per unit. Overhead is charged at 1.5 times the direct labor cost. Finished units sold for $80 before the process improvement and $90 after. What is the increase in productivity associated with the process improvement? (Rounded to four decimals.)