1.1 Carbondale Casting produces cast bronze valves on a 10-person assembly line. On a recent day, 160 valves were pro- duced during an 8-hour shift. a) Calculate the labor productivity of the line.

1.1  Carbondale Casting produces cast bronze valves on a 10-person assembly line. On a recent day, 160 valves were pro- duced during an 8-hour shift. 

a)  Calculate the labor productivity of the line. 

b)  John Goodale, the manager at Carbondale, changed the layout and was able to increase production to 180 units per 8-hour shift. What is the new labor productivity per labor-hour? 

c)  What is the percentage of productivity increase?