In December General Motors produced 6600 customized vans at its plant in Detroit. The labor productivity at this plant is known to have been 0.10 vans per labor hour during that month. 320 laborers were employed at the plant that month.
A. In the month of December what was the average number of hours worked per laborer
B. if productivity can be increased to 0.12 vans per hour the average number of hours worked per laborer is