III. A company has introduced processing changes so that output is increased by 25% with less material, but one additional worker required. Under the old process, five workers could produce 60 units per hour. and material input was $16 per output unit. For the new process, material is reduced to $10 per output unit. Workers are paid $12 per hour under either process, and overhead is charged at 1.6 times direct labor cost. Finished units sell for $31 each. What increase in multifactor productivity is associated with the process improvement