Lake Charles seafood makes 450 wooden packing boxes for fresh seafood per day, working in two 10-hour shifts. Due to increased demand, plant managers have decided to operate three 8-hour shifts per days instead. the plant is now able to produce 650 boxes per day.

a) before the change in work rules, the company's productivity per day =   boxes/hour ( round response to two decimals places)

After the change, the new productivity per day =   boxes/ hour ( round response to two decimals places

b) based on the changes made, the percentage increase in productivity=     percentage rounded to two decimals

c) If production is increased to 750 boxes per day (with three 8 hour shifts) the new productivity= boxes/hour (round to two decimal)