Four-Variance Analysis Use the following data given for Marilyn, Inc. In addition, the company has determined that actual variable overhead cost in April was $21,980.
| 
 Actual total cost   for direct labor 
 | 
 $86,800 
 | 
| 
 Total direct labor   hours worked 
 | 
 14,000 
 | 
| 
 Total standard labor   hours for the output in April 
 | 
 15,000 
 | 
| 
 Direct labor rate   variance-unfavorable 
 | 
 $2,800 
 | 
| 
 Actual total   overhead cost 
 | 
 $32,000 
 | 
| 
 Budgeted fixed   overhead cost 
 | 
 $9,000 
 | 
| 
 Practical capacity,   in hours 
 | 
 12,000 
 | 
| 
 Total overhead   application rate per standard direct labor hour 
 | 
 $2.25 
 | 
Required:  Use the model presented in Exhibit to Compute the following variances for April:
1.    Variable overhead efficiency variance.
2.    Variable overhead spending variance.
3.    Fixed overhead spending (budget) variance.
4.    Production-volume variance.