Jackson Corporation Uses a Standard Cost System, Applying Manufacturing Overhead

Essay

Jackson Corporation uses a standard cost system, applying manufacturing overhead on the basis of machine hours. The company's overhead standards per unit are shown below.
Variable overhead: 4 hours at $9 per hour
Fixed overhead: 4 hours at $6* per hour
*Based on planned monthly activity of 120,000 machine hours
Actual data for May were:
Number of units produced: 29,000
Number of machine hours worked: 125,000
Variable overhead costs incurred: $1,085,000
Fixed overhead costs incurred: $755,000
Required:
A. Calculate the spending and efficiency variances for variable overhead.
B. Calculate the budget and volume variances for fixed overhead.