a's Lumber, Inc., manufactures three types of plywood. The following table summarizes the production hours per unit in each of three production operations and other data for the pr Operations (hours) Plywood I II III Profit/Unit Grade A 2 2 4 $40 Grade B 5 5 2 $30 Grade X 10 3 2 $20 Maximum time available 950 450 700 w many units of each grade of lumber should be produced? ade A ade B units units