the monthly budget amounts in the report were based on an expected production of 60,000 units per month or 720,000 units per year. the assembling department manager is pleased with the report and expects a raise, or at least praise for a job well done. the company president, however, is unhappy with the results for august because only 58,000 units were produced. why does a flexible budget report provide a better basis for evaluating performance than the report based on static budget data?