Lake Charles Seafood makes 600 wooden packing boxes for fresh seafood per day, working in two 10-hour shifts.

Lake Charles Seafood makes 600 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 day instead. The plant is now able to produce 750 boxes per day.

a) Before the change in work​ rules, the​ company's productivity per day​ =___ boxes/hr

After the​ change, the new productivity level per day​ =_____ boxes/hr

b) Based on the changes​ made, the percent increase in productivity​ =___%

​c) If production is increased to 800 boxes per day, the new productivity =___boxes/hr