A pharmacy company has three plants; each plant employs managers, foremen and skilled workers as follows: Plant-1 Plant-2 Plant-3 Managers 2 4. 3 Foremen 9. 8. 9. Workers 85 98 165 If managers are paid $ 400 a week, foremen $305 and workers $160, what is the total payroll at each plant per week. Also write down this information in matrices form.