Variance Interpretation Vanadium Audio Inc. is a small manufacturer of electronic musical instruments. The plant manager received the following variable factory overhead report for the period: Actual Budget Variable Factory Controllable Overhead at Actual Production Variance Supplies 5542.000 $ 39,730 $ 2.220 0 PM\" and 52,500 50,900 1,600 0 light '"dimt 39,100 30,600 3 500 u factory wages ' Total $133,600 $121,280 $12,320 U Actual units produced: 15,000 (90% of practical capacity) The plant manager is not pleased with the $ 12,320 unfavorable variable factory overhead