Exercise (5): The following is the data of the Medical Supplies Company during June. Product Unit Standards : - Budgeted output 5000 unit - budget hour per unit .5 hour - Costs Variable overhead 10000 $ - Budgeted Rate 4 per unit of cost-allocation base. - Fixed overhead 5000 $ Actual performance : - Actual output 4500 unit - Actual Costs Variable overhead Incurred 9900 $ - Total Actual hours 3300 hour - Actual Rate 3 per unit of cost-allocation base. - Fixed overhead 5300 $ Required: 1. Calculate Variable overhead flexible-budget variance. 2. Variable Overhead Efficiency Variance 3. Variable Overhead Spending Variance. 4. Fixed overhead flexible-budget variance