a$)$ Their productivity $=6$ boxes$/$hour $($round your response to two decimal places$).$

Chuck and his employees have discussed redesigning the process to improve efficiency. Suppose they can increase the rate to $125$ boxes per day.

b$)$ Their new productivity $=$ boxes$/$hour $($round your response to two decimal places$).$

c$)$ The unit increase in productivity is $5$ boxes$/$hour $($round your response to two decimal places$).$