Broha Company manufactured 1,500 units of its only product during 2019. The inputs for this production are as follows: 450 pounds of Material A at a cost of $1.50 per pound 300 pounds of Material H at a cost of $2.75 per pound 300 direct labor hours at $20 per hour The firm manufactured 1,800 units of the same product in 2018 with the following inputs: 500 pounds of Material A at a cost of $1.20 per pound 360 pounds of Material H at a cost of $2.50 per pound 400 direct labor hours at $18 per hour Round all calculations to 2 significant digits. In 2019, the partial direct labor operational productivity is 4