Exercise 11-22 Straightforward Computation of Overhead Variances (LO 11-5) Crystal Glassware Company has the following standards and flexible-budget data. Standard variable-overhead rate Standard quantity of direct labor Budgeted fixed overhead Budgeted output Actual results for April are as follows: Actual output Actual variable overhead Actual fixed overhead $6.00 per direct-labor hour 2 hours per unit of output $100,000 25,000 units 20,000 units $320,000 $97,000 50,000 hours Actual direct labor Required: Use the variance formulas to compute the following variances. Indicate whether each variance is favorable or unfavorable, where appropriate. 1. Variable-overhead spending variance. 2. Variable-overhead efficiency variance. 3. Fixed-overhead budget variance. 4. Fixed-overhead volume variance