Final answer:
Chuck and his employees have a productivity of 20 boxes/hour. If they increase their production to 600 boxes per day, their new productivity would be 30 boxes/hour. The unit increase in productivity is 10 boxes/hour and the percentage increase is 50%.
Step-by-step explanation:
a) The productivity of Chuck Sox and his three employees is calculated by dividing the number of boxes produced (400) by the total amount of time spent (20 hours). So the productivity is 20 boxes/hour.
b) If they can increase their production to 600 boxes per day, their new productivity would be calculated by dividing the number of boxes produced (600) by the same amount of time spent (20 hours). So the new productivity would be 30 boxes/hour.
c) The unit increase in productivity can be found by subtracting the initial productivity from the new productivity. In this case, it would be 30 - 20 = 10 boxes/hour.
d) The percentage increase in productivity can be calculated by dividing the unit increase in productivity by the initial productivity and multiplying by 100. In this case, it would be (10/20) × 100 = 50%.