Compute the company's activity variances for May

Jake's Roof Repair has provided the following data concerning its costs: Fixed Cost Cost per per Month Repair-Hour Wages and salaries $21,200 $15.00 Parts and supplies $ 7.40 Equipment depreciation $ 2,720 $ 0.45 Truck operating expenses $ 5,720 $ 1.50 Rent $ 4,690 Administrative expenses $ 3,850 $ 0.60 For example, wages and salaries should be $21,200 plus $15.00 per repair-hour. The company expected to work 2,600 repair-hours in May, but actually worked 2,500 repair-hours. The company expects its sales to be $50.00 per repair-hour