ints eBook TipTop Flight School offers flying lessons at a small municipal airport. The school's owner and manager has been attempting to evaluate performance and control costs using a variance report that compares the planning budget to actual results. A recent variance report appears below TipTop Flight School Variance Report For the Month Ended July 31 Lessons Print References Revenue Expenses: Instructor wages Actual Results Planning 240 Budget 235 Variances $ 55,060 $ 54,050 $1,010 F Aircraft depreciation Fuel Maintenance Ground facility expenses Administration Total expense Net operating income 11,865 11,750 115 U 8,400 8,225 175 U 4,840 4,230 610 U 4,240 4,125 115 U 2,810 2,875 65 F 4,280 4,340 60 F 36,435 35,545 890 U 5 18,625 $ 18,505 $ 120 F After several months of using these reports, the owner has become frustrated. For example, she is quite confident that instructor