Given this information on planned and actual inputs and outputs for a service center, determine the work backlog for each period. The beginning backlog is 12 hours of work. The figures shown are standard hours of work. Input Period 1 2 3 4 5 Planned 24 Actual 25 NN 24 27 N N 24 20 22 24 20 22 24 14 Output Period 1 2 3 4 Planned Actual 24 24 24 22 22 +3 22 4 2 24 23 NN 24 24 522 23 24 Click here for the Excel Data File Period 1 2 3 4 50 Backlog